Home Explore Help
Sign In
wangsaitao
/
guotianyun-sp-yh
1
0
Fork 0
Files Issues 0 Pull Requests 0 Wiki
Branch: master
Branches Tags
guotianyun-s...
/
user_guide
/
libraries
/
language.html

language.html 51 KB
Permalink History Raw

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733 
  1. 

  2. 

  3. <!DOCTYPE html>
    4. 

  4. <!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
    5. 

  5. <!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
    6. 

  6. <head>
    7. 

  7.   <meta charset="utf-8">
    8. 

  8.   <meta name="viewport" content="width=device-width, initial-scale=1.0">
    9. 

  9.   
    10. 

  10.   <title>Language Class &mdash; CodeIgniter 3.1.11 documentation</title>
    11. 

  11.   
    12. 

  12. 

  13.   
    14. 

  14.   
    15. 

  15.     <link rel="shortcut icon" href="../_static/ci-icon.ico"/>
    16. 

  16.   
    17. 

  17. 

  18.   
    19. 

  19.   <link href='https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic|Roboto+Slab:400,700|Inconsolata:400,700&subset=latin,cyrillic' rel='stylesheet' type='text/css'>
    20. 

  20. 

  21.   
    22. 

  22.   
    23. 

  23.     
    24. 

  24. 

  25.   
    26. 

  26. 

  27.   
    28. 

  28.   
    29. 

  29.     <link rel="stylesheet" href="../_static/css/citheme.css" type="text/css" />
    30. 

  30.   
    31. 

  31. 

  32.   
    33. 

  33.         <link rel="index" title="Index"
    34. 

  34.               href="../genindex.html"/>
    35. 

  35.         <link rel="search" title="Search" href="../search.html"/>
    36. 

  36.     <link rel="top" title="CodeIgniter 3.1.11 documentation" href="../index.html"/>
    37. 

  37.         <link rel="up" title="Libraries" href="index.html"/>
    38. 

  38.         <link rel="next" title="Loader Class" href="loader.html"/>
    39. 

  39.         <link rel="prev" title="Javascript Class" href="javascript.html"/> 
    40. 

  40. 

  41.   
    42. 

  42.   <script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.6.2/modernizr.min.js"></script>
    43. 

  43. 

  44. </head>
    45. 

  45. 

  46. <body class="wy-body-for-nav" role="document">
    47. 

  47. 

  48.   <div id="nav">
    49. 

  49.   <div id="nav_inner">
    50. 

  50.     
    51. 

  51.     
    52. 

  52.     
    53. 

  53.       <div id="pulldown-menu" class="ciNav">
    54. 

  54.         <ul>
    55. 

  55. <li class="toctree-l1"><a class="reference internal" href="../general/welcome.html">Welcome to CodeIgniter</a></li>
    56. 

  56. </ul>
    57. 

  57. <ul>
    58. 

  58. <li class="toctree-l1"><a class="reference internal" href="../installation/index.html">Installation Instructions</a><ul>
    59. 

  59. <li class="toctree-l2"><a class="reference internal" href="../installation/downloads.html">Downloading CodeIgniter</a></li>
    60. 

  60. <li class="toctree-l2"><a class="reference internal" href="../installation/index.html">Installation Instructions</a></li>
    61. 

  61. <li class="toctree-l2"><a class="reference internal" href="../installation/upgrading.html">Upgrading From a Previous Version</a></li>
    62. 

  62. <li class="toctree-l2"><a class="reference internal" href="../installation/troubleshooting.html">Troubleshooting</a></li>
    63. 

  63. </ul>
    64. 

  64. </li>
    65. 

  65. </ul>
    66. 

  66. <ul>
    67. 

  67. <li class="toctree-l1"><a class="reference internal" href="../overview/index.html">CodeIgniter Overview</a><ul>
    68. 

  68. <li class="toctree-l2"><a class="reference internal" href="../overview/getting_started.html">Getting Started</a></li>
    69. 

  69. <li class="toctree-l2"><a class="reference internal" href="../overview/at_a_glance.html">CodeIgniter at a Glance</a></li>
    70. 

  70. <li class="toctree-l2"><a class="reference internal" href="../overview/features.html">Supported Features</a></li>
    71. 

  71. <li class="toctree-l2"><a class="reference internal" href="../overview/appflow.html">Application Flow Chart</a></li>
    72. 

  72. <li class="toctree-l2"><a class="reference internal" href="../overview/mvc.html">Model-View-Controller</a></li>
    73. 

  73. <li class="toctree-l2"><a class="reference internal" href="../overview/goals.html">Architectural Goals</a></li>
    74. 

  74. </ul>
    75. 

  75. </li>
    76. 

  76. </ul>
    77. 

  77. <ul>
    78. 

  78. <li class="toctree-l1"><a class="reference internal" href="../tutorial/index.html">Tutorial</a><ul>
    79. 

  79. <li class="toctree-l2"><a class="reference internal" href="../tutorial/static_pages.html">Static pages</a></li>
    80. 

  80. <li class="toctree-l2"><a class="reference internal" href="../tutorial/news_section.html">News section</a></li>
    81. 

  81. <li class="toctree-l2"><a class="reference internal" href="../tutorial/create_news_items.html">Create news items</a></li>
    82. 

  82. <li class="toctree-l2"><a class="reference internal" href="../tutorial/conclusion.html">Conclusion</a></li>
    83. 

  83. </ul>
    84. 

  84. </li>
    85. 

  85. </ul>
    86. 

  86. <ul>
    87. 

  87. <li class="toctree-l1"><a class="reference internal" href="../contributing/index.html">Contributing to CodeIgniter</a><ul>
    88. 

  88. <li class="toctree-l2"><a class="reference internal" href="../documentation/index.html">Writing CodeIgniter Documentation</a></li>
    89. 

  89. <li class="toctree-l2"><a class="reference internal" href="../DCO.html">Developer’s Certificate of Origin 1.1</a></li>
    90. 

  90. </ul>
    91. 

  91. </li>
    92. 

  92. </ul>
    93. 

  93. <ul>
    94. 

  94. <li class="toctree-l1"><a class="reference internal" href="../general/index.html">General Topics</a><ul>
    95. 

  95. <li class="toctree-l2"><a class="reference internal" href="../general/urls.html">CodeIgniter URLs</a></li>
    96. 

  96. <li class="toctree-l2"><a class="reference internal" href="../general/controllers.html">Controllers</a></li>
    97. 

  97. <li class="toctree-l2"><a class="reference internal" href="../general/reserved_names.html">Reserved Names</a></li>
    98. 

  98. <li class="toctree-l2"><a class="reference internal" href="../general/views.html">Views</a></li>
    99. 

  99. <li class="toctree-l2"><a class="reference internal" href="../general/models.html">Models</a></li>
    100. 

  100. <li class="toctree-l2"><a class="reference internal" href="../general/helpers.html">Helpers</a></li>
    101. 

  101. <li class="toctree-l2"><a class="reference internal" href="../general/libraries.html">Using CodeIgniter Libraries</a></li>
    102. 

  102. <li class="toctree-l2"><a class="reference internal" href="../general/creating_libraries.html">Creating Libraries</a></li>
    103. 

  103. <li class="toctree-l2"><a class="reference internal" href="../general/drivers.html">Using CodeIgniter Drivers</a></li>
    104. 

  104. <li class="toctree-l2"><a class="reference internal" href="../general/creating_drivers.html">Creating Drivers</a></li>
    105. 

  105. <li class="toctree-l2"><a class="reference internal" href="../general/core_classes.html">Creating Core System Classes</a></li>
    106. 

  106. <li class="toctree-l2"><a class="reference internal" href="../general/ancillary_classes.html">Creating Ancillary Classes</a></li>
    107. 

  107. <li class="toctree-l2"><a class="reference internal" href="../general/hooks.html">Hooks - Extending the Framework Core</a></li>
    108. 

  108. <li class="toctree-l2"><a class="reference internal" href="../general/autoloader.html">Auto-loading Resources</a></li>
    109. 

  109. <li class="toctree-l2"><a class="reference internal" href="../general/common_functions.html">Common Functions</a></li>
    110. 

  110. <li class="toctree-l2"><a class="reference internal" href="../general/compatibility_functions.html">Compatibility Functions</a></li>
    111. 

  111. <li class="toctree-l2"><a class="reference internal" href="../general/routing.html">URI Routing</a></li>
    112. 

  112. <li class="toctree-l2"><a class="reference internal" href="../general/errors.html">Error Handling</a></li>
    113. 

  113. <li class="toctree-l2"><a class="reference internal" href="../general/caching.html">Caching</a></li>
    114. 

  114. <li class="toctree-l2"><a class="reference internal" href="../general/profiling.html">Profiling Your Application</a></li>
    115. 

  115. <li class="toctree-l2"><a class="reference internal" href="../general/cli.html">Running via the CLI</a></li>
    116. 

  116. <li class="toctree-l2"><a class="reference internal" href="../general/managing_apps.html">Managing your Applications</a></li>
    117. 

  117. <li class="toctree-l2"><a class="reference internal" href="../general/environments.html">Handling Multiple Environments</a></li>
    118. 

  118. <li class="toctree-l2"><a class="reference internal" href="../general/alternative_php.html">Alternate PHP Syntax for View Files</a></li>
    119. 

  119. <li class="toctree-l2"><a class="reference internal" href="../general/security.html">Security</a></li>
    120. 

  120. <li class="toctree-l2"><a class="reference internal" href="../general/styleguide.html">PHP Style Guide</a></li>
    121. 

  121. </ul>
    122. 

  122. </li>
    123. 

  123. </ul>
    124. 

  124. <ul class="current">
    125. 

  125. <li class="toctree-l1 current"><a class="reference internal" href="index.html">Libraries</a><ul class="current">
    126. 

  126. <li class="toctree-l2"><a class="reference internal" href="benchmark.html">Benchmarking Class</a></li>
    127. 

  127. <li class="toctree-l2"><a class="reference internal" href="caching.html">Caching Driver</a></li>
    128. 

  128. <li class="toctree-l2"><a class="reference internal" href="calendar.html">Calendaring Class</a></li>
    129. 

  129. <li class="toctree-l2"><a class="reference internal" href="cart.html">Shopping Cart Class</a></li>
    130. 

  130. <li class="toctree-l2"><a class="reference internal" href="config.html">Config Class</a></li>
    131. 

  131. <li class="toctree-l2"><a class="reference internal" href="email.html">Email Class</a></li>
    132. 

  132. <li class="toctree-l2"><a class="reference internal" href="encrypt.html">Encrypt Class</a></li>
    133. 

  133. <li class="toctree-l2"><a class="reference internal" href="encryption.html">Encryption Library</a></li>
    134. 

  134. <li class="toctree-l2"><a class="reference internal" href="file_uploading.html">File Uploading Class</a></li>
    135. 

  135. <li class="toctree-l2"><a class="reference internal" href="form_validation.html">Form Validation</a></li>
    136. 

  136. <li class="toctree-l2"><a class="reference internal" href="ftp.html">FTP Class</a></li>
    137. 

  137. <li class="toctree-l2"><a class="reference internal" href="image_lib.html">Image Manipulation Class</a></li>
    138. 

  138. <li class="toctree-l2"><a class="reference internal" href="input.html">Input Class</a></li>
    139. 

  139. <li class="toctree-l2"><a class="reference internal" href="javascript.html">Javascript Class</a></li>
    140. 

  140. <li class="toctree-l2 current"><a class="current reference internal" href="#">Language Class</a></li>
    141. 

  141. <li class="toctree-l2"><a class="reference internal" href="loader.html">Loader Class</a></li>
    142. 

  142. <li class="toctree-l2"><a class="reference internal" href="migration.html">Migrations Class</a></li>
    143. 

  143. <li class="toctree-l2"><a class="reference internal" href="output.html">Output Class</a></li>
    144. 

  144. <li class="toctree-l2"><a class="reference internal" href="pagination.html">Pagination Class</a></li>
    145. 

  145. <li class="toctree-l2"><a class="reference internal" href="parser.html">Template Parser Class</a></li>
    146. 

  146. <li class="toctree-l2"><a class="reference internal" href="security.html">Security Class</a></li>
    147. 

  147. <li class="toctree-l2"><a class="reference internal" href="sessions.html">Session Library</a></li>
    148. 

  148. <li class="toctree-l2"><a class="reference internal" href="table.html">HTML Table Class</a></li>
    149. 

  149. <li class="toctree-l2"><a class="reference internal" href="trackback.html">Trackback Class</a></li>
    150. 

  150. <li class="toctree-l2"><a class="reference internal" href="typography.html">Typography Class</a></li>
    151. 

  151. <li class="toctree-l2"><a class="reference internal" href="unit_testing.html">Unit Testing Class</a></li>
    152. 

  152. <li class="toctree-l2"><a class="reference internal" href="uri.html">URI Class</a></li>
    153. 

  153. <li class="toctree-l2"><a class="reference internal" href="user_agent.html">User Agent Class</a></li>
    154. 

  154. <li class="toctree-l2"><a class="reference internal" href="xmlrpc.html">XML-RPC and XML-RPC Server Classes</a></li>
    155. 

  155. <li class="toctree-l2"><a class="reference internal" href="zip.html">Zip Encoding Class</a></li>
    156. 

  156. </ul>
    157. 

  157. </li>
    158. 

  158. </ul>
    159. 

  159. <ul>
    160. 

  160. <li class="toctree-l1"><a class="reference internal" href="../database/index.html">Database Reference</a><ul>
    161. 

  161. <li class="toctree-l2"><a class="reference internal" href="../database/examples.html">Quick Start: Usage Examples</a></li>
    162. 

  162. <li class="toctree-l2"><a class="reference internal" href="../database/configuration.html">Database Configuration</a></li>
    163. 

  163. <li class="toctree-l2"><a class="reference internal" href="../database/connecting.html">Connecting to a Database</a></li>
    164. 

  164. <li class="toctree-l2"><a class="reference internal" href="../database/queries.html">Running Queries</a></li>
    165. 

  165. <li class="toctree-l2"><a class="reference internal" href="../database/results.html">Generating Query Results</a></li>
    166. 

  166. <li class="toctree-l2"><a class="reference internal" href="../database/helpers.html">Query Helper Functions</a></li>
    167. 

  167. <li class="toctree-l2"><a class="reference internal" href="../database/query_builder.html">Query Builder Class</a></li>
    168. 

  168. <li class="toctree-l2"><a class="reference internal" href="../database/transactions.html">Transactions</a></li>
    169. 

  169. <li class="toctree-l2"><a class="reference internal" href="../database/metadata.html">Getting MetaData</a></li>
    170. 

  170. <li class="toctree-l2"><a class="reference internal" href="../database/call_function.html">Custom Function Calls</a></li>
    171. 

  171. <li class="toctree-l2"><a class="reference internal" href="../database/caching.html">Query Caching</a></li>
    172. 

  172. <li class="toctree-l2"><a class="reference internal" href="../database/forge.html">Database Manipulation with Database Forge</a></li>
    173. 

  173. <li class="toctree-l2"><a class="reference internal" href="../database/utilities.html">Database Utilities Class</a></li>
    174. 

  174. <li class="toctree-l2"><a class="reference internal" href="../database/db_driver_reference.html">Database Driver Reference</a></li>
    175. 

  175. </ul>
    176. 

  176. </li>
    177. 

  177. </ul>
    178. 

  178. <ul>
    179. 

  179. <li class="toctree-l1"><a class="reference internal" href="../helpers/index.html">Helpers</a><ul>
    180. 

  180. <li class="toctree-l2"><a class="reference internal" href="../helpers/array_helper.html">Array Helper</a></li>
    181. 

  181. <li class="toctree-l2"><a class="reference internal" href="../helpers/captcha_helper.html">CAPTCHA Helper</a></li>
    182. 

  182. <li class="toctree-l2"><a class="reference internal" href="../helpers/cookie_helper.html">Cookie Helper</a></li>
    183. 

  183. <li class="toctree-l2"><a class="reference internal" href="../helpers/date_helper.html">Date Helper</a></li>
    184. 

  184. <li class="toctree-l2"><a class="reference internal" href="../helpers/directory_helper.html">Directory Helper</a></li>
    185. 

  185. <li class="toctree-l2"><a class="reference internal" href="../helpers/download_helper.html">Download Helper</a></li>
    186. 

  186. <li class="toctree-l2"><a class="reference internal" href="../helpers/email_helper.html">Email Helper</a></li>
    187. 

  187. <li class="toctree-l2"><a class="reference internal" href="../helpers/file_helper.html">File Helper</a></li>
    188. 

  188. <li class="toctree-l2"><a class="reference internal" href="../helpers/form_helper.html">Form Helper</a></li>
    189. 

  189. <li class="toctree-l2"><a class="reference internal" href="../helpers/html_helper.html">HTML Helper</a></li>
    190. 

  190. <li class="toctree-l2"><a class="reference internal" href="../helpers/inflector_helper.html">Inflector Helper</a></li>
    191. 

  191. <li class="toctree-l2"><a class="reference internal" href="../helpers/language_helper.html">Language Helper</a></li>
    192. 

  192. <li class="toctree-l2"><a class="reference internal" href="../helpers/number_helper.html">Number Helper</a></li>
    193. 

  193. <li class="toctree-l2"><a class="reference internal" href="../helpers/path_helper.html">Path Helper</a></li>
    194. 

  194. <li class="toctree-l2"><a class="reference internal" href="../helpers/security_helper.html">Security Helper</a></li>
    195. 

  195. <li class="toctree-l2"><a class="reference internal" href="../helpers/smiley_helper.html">Smiley Helper</a></li>
    196. 

  196. <li class="toctree-l2"><a class="reference internal" href="../helpers/string_helper.html">String Helper</a></li>
    197. 

  197. <li class="toctree-l2"><a class="reference internal" href="../helpers/text_helper.html">Text Helper</a></li>
    198. 

  198. <li class="toctree-l2"><a class="reference internal" href="../helpers/typography_helper.html">Typography Helper</a></li>
    199. 

  199. <li class="toctree-l2"><a class="reference internal" href="../helpers/url_helper.html">URL Helper</a></li>
    200. 

  200. <li class="toctree-l2"><a class="reference internal" href="../helpers/xml_helper.html">XML Helper</a></li>
    201. 

  201. </ul>
    202. 

  202. </li>
    203. 

  203. </ul>
    204. 

  204. 

  205.       </div>
    206. 

  206.     
    207. 

  207.       
    208. 

  208.   </div>
    209. 

  209. </div>
    210. 

  210. <div id="nav2">
    211. 

  211.   <a href="#" id="openToc">
    212. 

  212.     <img src="data:image/jpeg;base64,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" title="Toggle Table of Contents" alt="Toggle Table of Contents" />
    213. 

  213.   </a>
    214. 

  214. </div>
    215. 

  215. 

  216.   <div class="wy-grid-for-nav">
    217. 

  217. 

  218.     
    219. 

  219.     <nav data-toggle="wy-nav-shift" class="wy-nav-side">
    220. 

  220.       <div class="wy-side-nav-search">
    221. 

  221.         
    222. 

  222.           <a href="../index.html" class="fa fa-home"> CodeIgniter</a>
    223. 

  223.         
    224. 

  224.         
    225. 

  225. <div role="search">
    226. 

  226.   <form id="rtd-search-form" class="wy-form" action="../search.html" method="get">
    227. 

  227.     <input type="text" name="q" placeholder="Search docs" />
    228. 

  228.     <input type="hidden" name="check_keywords" value="yes" />
    229. 

  229.     <input type="hidden" name="area" value="default" />
    230. 

  230.   </form>
    231. 

  231. </div>
    232. 

  232.       </div>
    233. 

  233. 

  234.       <div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation">
    235. 

  235.         
    236. 

  236.           
    237. 

  237.           
    238. 

  238.               <ul>
    239. 

  239. <li class="toctree-l1"><a class="reference internal" href="../general/welcome.html">Welcome to CodeIgniter</a></li>
    240. 

  240. </ul>
    241. 

  241. <ul>
    242. 

  242. <li class="toctree-l1"><a class="reference internal" href="../installation/index.html">Installation Instructions</a><ul>
    243. 

  243. <li class="toctree-l2"><a class="reference internal" href="../installation/downloads.html">Downloading CodeIgniter</a></li>
    244. 

  244. <li class="toctree-l2"><a class="reference internal" href="../installation/index.html">Installation Instructions</a></li>
    245. 

  245. <li class="toctree-l2"><a class="reference internal" href="../installation/upgrading.html">Upgrading From a Previous Version</a></li>
    246. 

  246. <li class="toctree-l2"><a class="reference internal" href="../installation/troubleshooting.html">Troubleshooting</a></li>
    247. 

  247. </ul>
    248. 

  248. </li>
    249. 

  249. </ul>
    250. 

  250. <ul>
    251. 

  251. <li class="toctree-l1"><a class="reference internal" href="../overview/index.html">CodeIgniter Overview</a><ul>
    252. 

  252. <li class="toctree-l2"><a class="reference internal" href="../overview/getting_started.html">Getting Started</a></li>
    253. 

  253. <li class="toctree-l2"><a class="reference internal" href="../overview/at_a_glance.html">CodeIgniter at a Glance</a></li>
    254. 

  254. <li class="toctree-l2"><a class="reference internal" href="../overview/features.html">Supported Features</a></li>
    255. 

  255. <li class="toctree-l2"><a class="reference internal" href="../overview/appflow.html">Application Flow Chart</a></li>
    256. 

  256. <li class="toctree-l2"><a class="reference internal" href="../overview/mvc.html">Model-View-Controller</a></li>
    257. 

  257. <li class="toctree-l2"><a class="reference internal" href="../overview/goals.html">Architectural Goals</a></li>
    258. 

  258. </ul>
    259. 

  259. </li>
    260. 

  260. </ul>
    261. 

  261. <ul>
    262. 

  262. <li class="toctree-l1"><a class="reference internal" href="../tutorial/index.html">Tutorial</a><ul>
    263. 

  263. <li class="toctree-l2"><a class="reference internal" href="../tutorial/static_pages.html">Static pages</a></li>
    264. 

  264. <li class="toctree-l2"><a class="reference internal" href="../tutorial/news_section.html">News section</a></li>
    265. 

  265. <li class="toctree-l2"><a class="reference internal" href="../tutorial/create_news_items.html">Create news items</a></li>
    266. 

  266. <li class="toctree-l2"><a class="reference internal" href="../tutorial/conclusion.html">Conclusion</a></li>
    267. 

  267. </ul>
    268. 

  268. </li>
    269. 

  269. </ul>
    270. 

  270. <ul>
    271. 

  271. <li class="toctree-l1"><a class="reference internal" href="../contributing/index.html">Contributing to CodeIgniter</a><ul>
    272. 

  272. <li class="toctree-l2"><a class="reference internal" href="../documentation/index.html">Writing CodeIgniter Documentation</a></li>
    273. 

  273. <li class="toctree-l2"><a class="reference internal" href="../DCO.html">Developer’s Certificate of Origin 1.1</a></li>
    274. 

  274. </ul>
    275. 

  275. </li>
    276. 

  276. </ul>
    277. 

  277. <ul>
    278. 

  278. <li class="toctree-l1"><a class="reference internal" href="../general/index.html">General Topics</a><ul>
    279. 

  279. <li class="toctree-l2"><a class="reference internal" href="../general/urls.html">CodeIgniter URLs</a></li>
    280. 

  280. <li class="toctree-l2"><a class="reference internal" href="../general/controllers.html">Controllers</a></li>
    281. 

  281. <li class="toctree-l2"><a class="reference internal" href="../general/reserved_names.html">Reserved Names</a></li>
    282. 

  282. <li class="toctree-l2"><a class="reference internal" href="../general/views.html">Views</a></li>
    283. 

  283. <li class="toctree-l2"><a class="reference internal" href="../general/models.html">Models</a></li>
    284. 

  284. <li class="toctree-l2"><a class="reference internal" href="../general/helpers.html">Helpers</a></li>
    285. 

  285. <li class="toctree-l2"><a class="reference internal" href="../general/libraries.html">Using CodeIgniter Libraries</a></li>
    286. 

  286. <li class="toctree-l2"><a class="reference internal" href="../general/creating_libraries.html">Creating Libraries</a></li>
    287. 

  287. <li class="toctree-l2"><a class="reference internal" href="../general/drivers.html">Using CodeIgniter Drivers</a></li>
    288. 

  288. <li class="toctree-l2"><a class="reference internal" href="../general/creating_drivers.html">Creating Drivers</a></li>
    289. 

  289. <li class="toctree-l2"><a class="reference internal" href="../general/core_classes.html">Creating Core System Classes</a></li>
    290. 

  290. <li class="toctree-l2"><a class="reference internal" href="../general/ancillary_classes.html">Creating Ancillary Classes</a></li>
    291. 

  291. <li class="toctree-l2"><a class="reference internal" href="../general/hooks.html">Hooks - Extending the Framework Core</a></li>
    292. 

  292. <li class="toctree-l2"><a class="reference internal" href="../general/autoloader.html">Auto-loading Resources</a></li>
    293. 

  293. <li class="toctree-l2"><a class="reference internal" href="../general/common_functions.html">Common Functions</a></li>
    294. 

  294. <li class="toctree-l2"><a class="reference internal" href="../general/compatibility_functions.html">Compatibility Functions</a></li>
    295. 

  295. <li class="toctree-l2"><a class="reference internal" href="../general/routing.html">URI Routing</a></li>
    296. 

  296. <li class="toctree-l2"><a class="reference internal" href="../general/errors.html">Error Handling</a></li>
    297. 

  297. <li class="toctree-l2"><a class="reference internal" href="../general/caching.html">Caching</a></li>
    298. 

  298. <li class="toctree-l2"><a class="reference internal" href="../general/profiling.html">Profiling Your Application</a></li>
    299. 

  299. <li class="toctree-l2"><a class="reference internal" href="../general/cli.html">Running via the CLI</a></li>
    300. 

  300. <li class="toctree-l2"><a class="reference internal" href="../general/managing_apps.html">Managing your Applications</a></li>
    301. 

  301. <li class="toctree-l2"><a class="reference internal" href="../general/environments.html">Handling Multiple Environments</a></li>
    302. 

  302. <li class="toctree-l2"><a class="reference internal" href="../general/alternative_php.html">Alternate PHP Syntax for View Files</a></li>
    303. 

  303. <li class="toctree-l2"><a class="reference internal" href="../general/security.html">Security</a></li>
    304. 

  304. <li class="toctree-l2"><a class="reference internal" href="../general/styleguide.html">PHP Style Guide</a></li>
    305. 

  305. </ul>
    306. 

  306. </li>
    307. 

  307. </ul>
    308. 

  308. <ul class="current">
    309. 

  309. <li class="toctree-l1 current"><a class="reference internal" href="index.html">Libraries</a><ul class="current">
    310. 

  310. <li class="toctree-l2"><a class="reference internal" href="benchmark.html">Benchmarking Class</a></li>
    311. 

  311. <li class="toctree-l2"><a class="reference internal" href="caching.html">Caching Driver</a></li>
    312. 

  312. <li class="toctree-l2"><a class="reference internal" href="calendar.html">Calendaring Class</a></li>
    313. 

  313. <li class="toctree-l2"><a class="reference internal" href="cart.html">Shopping Cart Class</a></li>
    314. 

  314. <li class="toctree-l2"><a class="reference internal" href="config.html">Config Class</a></li>
    315. 

  315. <li class="toctree-l2"><a class="reference internal" href="email.html">Email Class</a></li>
    316. 

  316. <li class="toctree-l2"><a class="reference internal" href="encrypt.html">Encrypt Class</a></li>
    317. 

  317. <li class="toctree-l2"><a class="reference internal" href="encryption.html">Encryption Library</a></li>
    318. 

  318. <li class="toctree-l2"><a class="reference internal" href="file_uploading.html">File Uploading Class</a></li>
    319. 

  319. <li class="toctree-l2"><a class="reference internal" href="form_validation.html">Form Validation</a></li>
    320. 

  320. <li class="toctree-l2"><a class="reference internal" href="ftp.html">FTP Class</a></li>
    321. 

  321. <li class="toctree-l2"><a class="reference internal" href="image_lib.html">Image Manipulation Class</a></li>
    322. 

  322. <li class="toctree-l2"><a class="reference internal" href="input.html">Input Class</a></li>
    323. 

  323. <li class="toctree-l2"><a class="reference internal" href="javascript.html">Javascript Class</a></li>
    324. 

  324. <li class="toctree-l2 current"><a class="current reference internal" href="#">Language Class</a></li>
    325. 

  325. <li class="toctree-l2"><a class="reference internal" href="loader.html">Loader Class</a></li>
    326. 

  326. <li class="toctree-l2"><a class="reference internal" href="migration.html">Migrations Class</a></li>
    327. 

  327. <li class="toctree-l2"><a class="reference internal" href="output.html">Output Class</a></li>
    328. 

  328. <li class="toctree-l2"><a class="reference internal" href="pagination.html">Pagination Class</a></li>
    329. 

  329. <li class="toctree-l2"><a class="reference internal" href="parser.html">Template Parser Class</a></li>
    330. 

  330. <li class="toctree-l2"><a class="reference internal" href="security.html">Security Class</a></li>
    331. 

  331. <li class="toctree-l2"><a class="reference internal" href="sessions.html">Session Library</a></li>
    332. 

  332. <li class="toctree-l2"><a class="reference internal" href="table.html">HTML Table Class</a></li>
    333. 

  333. <li class="toctree-l2"><a class="reference internal" href="trackback.html">Trackback Class</a></li>
    334. 

  334. <li class="toctree-l2"><a class="reference internal" href="typography.html">Typography Class</a></li>
    335. 

  335. <li class="toctree-l2"><a class="reference internal" href="unit_testing.html">Unit Testing Class</a></li>
    336. 

  336. <li class="toctree-l2"><a class="reference internal" href="uri.html">URI Class</a></li>
    337. 

  337. <li class="toctree-l2"><a class="reference internal" href="user_agent.html">User Agent Class</a></li>
    338. 

  338. <li class="toctree-l2"><a class="reference internal" href="xmlrpc.html">XML-RPC and XML-RPC Server Classes</a></li>
    339. 

  339. <li class="toctree-l2"><a class="reference internal" href="zip.html">Zip Encoding Class</a></li>
    340. 

  340. </ul>
    341. 

  341. </li>
    342. 

  342. </ul>
    343. 

  343. <ul>
    344. 

  344. <li class="toctree-l1"><a class="reference internal" href="../database/index.html">Database Reference</a><ul>
    345. 

  345. <li class="toctree-l2"><a class="reference internal" href="../database/examples.html">Quick Start: Usage Examples</a></li>
    346. 

  346. <li class="toctree-l2"><a class="reference internal" href="../database/configuration.html">Database Configuration</a></li>
    347. 

  347. <li class="toctree-l2"><a class="reference internal" href="../database/connecting.html">Connecting to a Database</a></li>
    348. 

  348. <li class="toctree-l2"><a class="reference internal" href="../database/queries.html">Running Queries</a></li>
    349. 

  349. <li class="toctree-l2"><a class="reference internal" href="../database/results.html">Generating Query Results</a></li>
    350. 

  350. <li class="toctree-l2"><a class="reference internal" href="../database/helpers.html">Query Helper Functions</a></li>
    351. 

  351. <li class="toctree-l2"><a class="reference internal" href="../database/query_builder.html">Query Builder Class</a></li>
    352. 

  352. <li class="toctree-l2"><a class="reference internal" href="../database/transactions.html">Transactions</a></li>
    353. 

  353. <li class="toctree-l2"><a class="reference internal" href="../database/metadata.html">Getting MetaData</a></li>
    354. 

  354. <li class="toctree-l2"><a class="reference internal" href="../database/call_function.html">Custom Function Calls</a></li>
    355. 

  355. <li class="toctree-l2"><a class="reference internal" href="../database/caching.html">Query Caching</a></li>
    356. 

  356. <li class="toctree-l2"><a class="reference internal" href="../database/forge.html">Database Manipulation with Database Forge</a></li>
    357. 

  357. <li class="toctree-l2"><a class="reference internal" href="../database/utilities.html">Database Utilities Class</a></li>
    358. 

  358. <li class="toctree-l2"><a class="reference internal" href="../database/db_driver_reference.html">Database Driver Reference</a></li>
    359. 

  359. </ul>
    360. 

  360. </li>
    361. 

  361. </ul>
    362. 

  362. <ul>
    363. 

  363. <li class="toctree-l1"><a class="reference internal" href="../helpers/index.html">Helpers</a><ul>
    364. 

  364. <li class="toctree-l2"><a class="reference internal" href="../helpers/array_helper.html">Array Helper</a></li>
    365. 

  365. <li class="toctree-l2"><a class="reference internal" href="../helpers/captcha_helper.html">CAPTCHA Helper</a></li>
    366. 

  366. <li class="toctree-l2"><a class="reference internal" href="../helpers/cookie_helper.html">Cookie Helper</a></li>
    367. 

  367. <li class="toctree-l2"><a class="reference internal" href="../helpers/date_helper.html">Date Helper</a></li>
    368. 

  368. <li class="toctree-l2"><a class="reference internal" href="../helpers/directory_helper.html">Directory Helper</a></li>
    369. 

  369. <li class="toctree-l2"><a class="reference internal" href="../helpers/download_helper.html">Download Helper</a></li>
    370. 

  370. <li class="toctree-l2"><a class="reference internal" href="../helpers/email_helper.html">Email Helper</a></li>
    371. 

  371. <li class="toctree-l2"><a class="reference internal" href="../helpers/file_helper.html">File Helper</a></li>
    372. 

  372. <li class="toctree-l2"><a class="reference internal" href="../helpers/form_helper.html">Form Helper</a></li>
    373. 

  373. <li class="toctree-l2"><a class="reference internal" href="../helpers/html_helper.html">HTML Helper</a></li>
    374. 

  374. <li class="toctree-l2"><a class="reference internal" href="../helpers/inflector_helper.html">Inflector Helper</a></li>
    375. 

  375. <li class="toctree-l2"><a class="reference internal" href="../helpers/language_helper.html">Language Helper</a></li>
    376. 

  376. <li class="toctree-l2"><a class="reference internal" href="../helpers/number_helper.html">Number Helper</a></li>
    377. 

  377. <li class="toctree-l2"><a class="reference internal" href="../helpers/path_helper.html">Path Helper</a></li>
    378. 

  378. <li class="toctree-l2"><a class="reference internal" href="../helpers/security_helper.html">Security Helper</a></li>
    379. 

  379. <li class="toctree-l2"><a class="reference internal" href="../helpers/smiley_helper.html">Smiley Helper</a></li>
    380. 

  380. <li class="toctree-l2"><a class="reference internal" href="../helpers/string_helper.html">String Helper</a></li>
    381. 

  381. <li class="toctree-l2"><a class="reference internal" href="../helpers/text_helper.html">Text Helper</a></li>
    382. 

  382. <li class="toctree-l2"><a class="reference internal" href="../helpers/typography_helper.html">Typography Helper</a></li>
    383. 

  383. <li class="toctree-l2"><a class="reference internal" href="../helpers/url_helper.html">URL Helper</a></li>
    384. 

  384. <li class="toctree-l2"><a class="reference internal" href="../helpers/xml_helper.html">XML Helper</a></li>
    385. 

  385. </ul>
    386. 

  386. </li>
    387. 

  387. </ul>
    388. 

  388. 

  389.           
    390. 

  390.         
    391. 

  391.       </div>
    392. 

  392.       &nbsp;
    393. 

  393.     </nav>
    394. 

  394. 

  395.     <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
    396. 

  396. 

  397.       
    398. 

  398.       <nav class="wy-nav-top" role="navigation" aria-label="top navigation">
    399. 

  399.         <i data-toggle="wy-nav-top" class="fa fa-bars"></i>
    400. 

  400.         <a href="../index.html">CodeIgniter</a>
    401. 

  401.       </nav>
    402. 

  402. 

  403. 

  404.       
    405. 

  405.       <div class="wy-nav-content">
    406. 

  406.         <div class="rst-content">
    407. 

  407.           <div role="navigation" aria-label="breadcrumbs navigation">
    408. 

  408.   <ul class="wy-breadcrumbs">
    409. 

  409.     <li><a href="../index.html">Docs</a> &raquo;</li>
    410. 

  410.       
    411. 

  411.         <li><a href="index.html">Libraries</a> &raquo;</li>
    412. 

  412.       
    413. 

  413.     <li>Language Class</li>
    414. 

  414.     <li class="wy-breadcrumbs-aside">
    415. 

  415.       
    416. 

  416.     </li>
    417. 

  417.     <div style="float:right;margin-left:5px;" id="closeMe">
    418. 

  418.       <img title="Classic Layout" alt="classic layout" src="data:image/gif;base64,R0lGODlhFAAUAJEAAAAAADMzM////wAAACH5BAUUAAIALAAAAAAUABQAAAImlI+py+0PU5gRBRDM3DxbWoXis42X13USOLauUIqnlsaH/eY6UwAAOw==" />
    419. 

  419.     </div>
    420. 

  420.   </ul>
    421. 

  421.   <hr/>
    422. 

  422. </div>
    423. 

  423.           <div role="main" class="document">
    424. 

  424.             
    425. 

  425.   <div class="section" id="language-class">
    426. 

  426. <h1>Language Class<a class="headerlink" href="#language-class" title="Permalink to this headline">¶</a></h1>
    427. 

  427. <p>The Language Class provides functions to retrieve language files and
    428. 

  428. lines of text for purposes of internationalization.</p>
    429. 

  429. <p>In your CodeIgniter <strong>system</strong> folder, you will find a <strong>language</strong> sub-directory
    430. 

  430. containing a set of language files for the <strong>english</strong> idiom.
    431. 

  431. The files in this directory (<strong>system/language/english/</strong>) define the regular messages,
    432. 

  432. error messages, and other generally output terms or expressions, for the different parts
    433. 

  433. of the CodeIgniter framework.</p>
    434. 

  434. <p>You can create or incorporate your own language files, as needed, in order to provide
    435. 

  435. application-specific error and other messages, or to provide translations of the core
    436. 

  436. messages into other languages. These translations or additional messages would go inside
    437. 

  437. your <strong>application/language/</strong> directory, with separate sub-directories for each idiom
    438. 

  438. (for instance, ‘french’ or ‘german’).</p>
    439. 

  439. <p>The CodeIgniter framework comes with a set of language files for the “english” idiom.
    440. 

  440. Additional approved translations for different idioms may be found in the
    441. 

  441. <a class="reference external" href="https://github.com/bcit-ci/codeigniter3-translations">CodeIgniter 3 Translations repositories</a>.
    442. 

  442. Each repository deals with a single idiom.</p>
    443. 

  443. <p>When CodeIgniter loads language files, it will load the one in <strong>system/language/</strong>
    444. 

  444. first and will then look for an override in your <strong>application/language/</strong> directory.</p>
    445. 

  445. <div class="admonition note">
    446. 

  446. <p class="first admonition-title">Note</p>
    447. 

  447. <p class="last">Each language should be stored in its own folder. For example,
    448. 

  448. the English files are located at: system/language/english</p>
    449. 

  449. </div>
    450. 

  450. <div class="contents local topic" id="contents">
    451. 

  451. <ul class="simple">
    452. 

  452. <li><a class="reference internal" href="#handling-multiple-languages" id="id1">Handling Multiple Languages</a><ul>
    453. 

  453. <li><a class="reference internal" href="#sample-language-files" id="id2">Sample Language Files</a></li>
    454. 

  454. <li><a class="reference internal" href="#example-of-switching-languages" id="id3">Example of switching languages</a></li>
    455. 

  455. </ul>
    456. 

  456. </li>
    457. 

  457. <li><a class="reference internal" href="#internationalization" id="id4">Internationalization</a></li>
    458. 

  458. <li><a class="reference internal" href="#using-the-language-class" id="id5">Using the Language Class</a><ul>
    459. 

  459. <li><a class="reference internal" href="#creating-language-files" id="id6">Creating Language Files</a></li>
    460. 

  460. <li><a class="reference internal" href="#loading-a-language-file" id="id7">Loading A Language File</a></li>
    461. 

  461. <li><a class="reference internal" href="#fetching-a-line-of-text" id="id8">Fetching a Line of Text</a><ul>
    462. 

  462. <li><a class="reference internal" href="#using-language-lines-as-form-labels" id="id9">Using language lines as form labels</a></li>
    463. 

  463. </ul>
    464. 

  464. </li>
    465. 

  465. <li><a class="reference internal" href="#auto-loading-languages" id="id10">Auto-loading Languages</a></li>
    466. 

  466. </ul>
    467. 

  467. </li>
    468. 

  468. <li><a class="reference internal" href="#class-reference" id="id11">Class Reference</a></li>
    469. 

  469. </ul>
    470. 

  470. </div>
    471. 

  471. <div class="custom-index container"></div><div class="section" id="handling-multiple-languages">
    472. 

  472. <h2><a class="toc-backref" href="#id1">Handling Multiple Languages</a><a class="headerlink" href="#handling-multiple-languages" title="Permalink to this headline">¶</a></h2>
    473. 

  473. <p>If you want to support multiple languages in your application, you would provide folders inside
    474. 

  474. your <strong>application/language/</strong> directory for each of them, and you would specify the default
    475. 

  475. language in your <strong>application/config/config.php</strong>.</p>
    476. 

  476. <p>The <strong>application/language/english/</strong> directory would contain any additional language files
    477. 

  477. needed by your application, for instance for error messages.</p>
    478. 

  478. <p>Each of the other idiom-specific directories would contain the core language files that you
    479. 

  479. obtained from the translations repositories, or that you translated yourself, as well as
    480. 

  480. any additional ones needed by your application.</p>
    481. 

  481. <p>You would store the language you are currently using, for instance in a session variable.</p>
    482. 

  482. <div class="section" id="sample-language-files">
    483. 

  483. <h3><a class="toc-backref" href="#id2">Sample Language Files</a><a class="headerlink" href="#sample-language-files" title="Permalink to this headline">¶</a></h3>
    484. 

  484. <div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nb">system</span><span class="o">/</span>
    485. 

  485.         <span class="nx">language</span><span class="o">/</span>
    486. 

  486.                 <span class="nx">english</span><span class="o">/</span>
    487. 

  487.                         <span class="o">...</span>
    488. 

  488.                         <span class="nx">email_lang</span><span class="o">.</span><span class="nx">php</span>
    489. 

  489.                         <span class="nx">form_validation_lang</span><span class="o">.</span><span class="nx">php</span>
    490. 

  490.                         <span class="o">...</span>
    491. 

  491. 

  492. <span class="nx">application</span><span class="o">/</span>
    493. 

  493.         <span class="nx">language</span><span class="o">/</span>
    494. 

  494.                 <span class="nx">english</span><span class="o">/</span>
    495. 

  495.                         <span class="nx">error_messages_lang</span><span class="o">.</span><span class="nx">php</span>
    496. 

  496.                 <span class="nx">french</span><span class="o">/</span>
    497. 

  497.                         <span class="o">...</span>
    498. 

  498.                         <span class="nx">email_lang</span><span class="o">.</span><span class="nx">php</span>
    499. 

  499.                         <span class="nx">error_messages_lang</span><span class="o">.</span><span class="nx">php</span>
    500. 

  500.                         <span class="nx">form_validation_lang</span><span class="o">.</span><span class="nx">php</span>
    501. 

  501.                         <span class="o">...</span>
    502. 

  502. </pre></div>
    503. 

  503. </div>
    504. 

  504. </div>
    505. 

  505. <div class="section" id="example-of-switching-languages">
    506. 

  506. <h3><a class="toc-backref" href="#id3">Example of switching languages</a><a class="headerlink" href="#example-of-switching-languages" title="Permalink to this headline">¶</a></h3>
    507. 

  507. <div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$idiom</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">session</span><span class="o">-&gt;</span><span class="na">get_userdata</span><span class="p">(</span><span class="s1">&#39;language&#39;</span><span class="p">);</span>
    508. 

  508. <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">lang</span><span class="o">-&gt;</span><span class="na">load</span><span class="p">(</span><span class="s1">&#39;error_messages&#39;</span><span class="p">,</span> <span class="nv">$idiom</span><span class="p">);</span>
    509. 

  509. <span class="nv">$oops</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">lang</span><span class="o">-&gt;</span><span class="na">line</span><span class="p">(</span><span class="s1">&#39;message_key&#39;</span><span class="p">);</span>
    510. 

  510. </pre></div>
    511. 

  511. </div>
    512. 

  512. </div>
    513. 

  513. </div>
    514. 

  514. <div class="section" id="internationalization">
    515. 

  515. <h2><a class="toc-backref" href="#id4">Internationalization</a><a class="headerlink" href="#internationalization" title="Permalink to this headline">¶</a></h2>
    516. 

  516. <p>The Language class in CodeIgniter is meant to provide an easy and lightweight
    517. 

  517. way to support multiplelanguages in your application. It is not meant to be a
    518. 

  518. full implementation of what is commonly called <a class="reference external" href="http://en.wikipedia.org/wiki/Internationalization_and_localization">internationalization and localization</a>.</p>
    519. 

  519. <p>We use the term “idiom” to refer to a language using its common name,
    520. 

  520. rather than using any of the international standards, such as “en”, “en-US”,
    521. 

  521. or “en-CA-x-ca” for English and some of its variants.</p>
    522. 

  522. <div class="admonition note">
    523. 

  523. <p class="first admonition-title">Note</p>
    524. 

  524. <p class="last">There is nothing to prevent you from using those abbreviations in your application!</p>
    525. 

  525. </div>
    526. 

  526. </div>
    527. 

  527. <div class="section" id="using-the-language-class">
    528. 

  528. <h2><a class="toc-backref" href="#id5">Using the Language Class</a><a class="headerlink" href="#using-the-language-class" title="Permalink to this headline">¶</a></h2>
    529. 

  529. <div class="section" id="creating-language-files">
    530. 

  530. <h3><a class="toc-backref" href="#id6">Creating Language Files</a><a class="headerlink" href="#creating-language-files" title="Permalink to this headline">¶</a></h3>
    531. 

  531. <p>Language files must be named with <strong>_lang.php</strong> as the filename extension.
    532. 

  532. For example, let’s say you want to create a file containing error messages.
    533. 

  533. You might name it: error_lang.php</p>
    534. 

  534. <p>Within the file you will assign each line of text to an array called
    535. 

  535. <code class="docutils literal"><span class="pre">$lang</span></code> with this prototype:</p>
    536. 

  536. <div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$lang</span><span class="p">[</span><span class="s1">&#39;language_key&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;The actual message to be shown&#39;</span><span class="p">;</span>
    537. 

  537. </pre></div>
    538. 

  538. </div>
    539. 

  539. <div class="admonition note">
    540. 

  540. <p class="first admonition-title">Note</p>
    541. 

  541. <p class="last">It’s a good practice to use a common prefix for all messages
    542. 

  542. in a given file to avoid collisions with similarly named items in other
    543. 

  543. files. For example, if you are creating error messages you might prefix
    544. 

  544. them with error_</p>
    545. 

  545. </div>
    546. 

  546. <div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$lang</span><span class="p">[</span><span class="s1">&#39;error_email_missing&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;You must submit an email address&#39;</span><span class="p">;</span>
    547. 

  547. <span class="nv">$lang</span><span class="p">[</span><span class="s1">&#39;error_url_missing&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;You must submit a URL&#39;</span><span class="p">;</span>
    548. 

  548. <span class="nv">$lang</span><span class="p">[</span><span class="s1">&#39;error_username_missing&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;You must submit a username&#39;</span><span class="p">;</span>
    549. 

  549. </pre></div>
    550. 

  550. </div>
    551. 

  551. </div>
    552. 

  552. <div class="section" id="loading-a-language-file">
    553. 

  553. <h3><a class="toc-backref" href="#id7">Loading A Language File</a><a class="headerlink" href="#loading-a-language-file" title="Permalink to this headline">¶</a></h3>
    554. 

  554. <p>In order to fetch a line from a particular file you must load the file
    555. 

  555. first. Loading a language file is done with the following code:</p>
    556. 

  556. <div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">lang</span><span class="o">-&gt;</span><span class="na">load</span><span class="p">(</span><span class="s1">&#39;filename&#39;</span><span class="p">,</span> <span class="s1">&#39;language&#39;</span><span class="p">);</span>
    557. 

  557. </pre></div>
    558. 

  558. </div>
    559. 

  559. <p>Where filename is the name of the file you wish to load (without the
    560. 

  560. file extension), and language is the language set containing it (ie,
    561. 

  561. english). If the second parameter is missing, the default language set
    562. 

  562. in your <strong>application/config/config.php</strong> file will be used.</p>
    563. 

  563. <p>You can also load multiple language files at the same time by passing an array of language files as first parameter.</p>
    564. 

  564. <div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">lang</span><span class="o">-&gt;</span><span class="na">load</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">&#39;filename1&#39;</span><span class="p">,</span> <span class="s1">&#39;filename2&#39;</span><span class="p">));</span>
    565. 

  565. </pre></div>
    566. 

  566. </div>
    567. 

  567. <div class="admonition note">
    568. 

  568. <p class="first admonition-title">Note</p>
    569. 

  569. <p class="last">The <em>language</em> parameter can only consist of letters.</p>
    570. 

  570. </div>
    571. 

  571. </div>
    572. 

  572. <div class="section" id="fetching-a-line-of-text">
    573. 

  573. <h3><a class="toc-backref" href="#id8">Fetching a Line of Text</a><a class="headerlink" href="#fetching-a-line-of-text" title="Permalink to this headline">¶</a></h3>
    574. 

  574. <p>Once your desired language file is loaded you can access any line of
    575. 

  575. text using this function:</p>
    576. 

  576. <div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">lang</span><span class="o">-&gt;</span><span class="na">line</span><span class="p">(</span><span class="s1">&#39;language_key&#39;</span><span class="p">);</span>
    577. 

  577. </pre></div>
    578. 

  578. </div>
    579. 

  579. <p>Where <em>language_key</em> is the array key corresponding to the line you wish
    580. 

  580. to show.</p>
    581. 

  581. <p>You can optionally pass FALSE as the second argument of that method to
    582. 

  582. disable error logging, in case you’re not sure if the line exists:</p>
    583. 

  583. <div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">lang</span><span class="o">-&gt;</span><span class="na">line</span><span class="p">(</span><span class="s1">&#39;misc_key&#39;</span><span class="p">,</span> <span class="k">FALSE</span><span class="p">);</span>
    584. 

  584. </pre></div>
    585. 

  585. </div>
    586. 

  586. <div class="admonition note">
    587. 

  587. <p class="first admonition-title">Note</p>
    588. 

  588. <p class="last">This method simply returns the line. It does not echo it.</p>
    589. 

  589. </div>
    590. 

  590. <div class="section" id="using-language-lines-as-form-labels">
    591. 

  591. <h4><a class="toc-backref" href="#id9">Using language lines as form labels</a><a class="headerlink" href="#using-language-lines-as-form-labels" title="Permalink to this headline">¶</a></h4>
    592. 

  592. <p>This feature has been deprecated from the language library and moved to
    593. 

  593. the <a class="reference internal" href="../helpers/language_helper.html#lang" title="lang"><code class="xref php php-func docutils literal"><span class="pre">lang()</span></code></a> function of the <a class="reference internal" href="../helpers/language_helper.html"><span class="doc">Language Helper</span></a>.</p>
    594. 

  594. </div>
    595. 

  595. </div>
    596. 

  596. <div class="section" id="auto-loading-languages">
    597. 

  597. <h3><a class="toc-backref" href="#id10">Auto-loading Languages</a><a class="headerlink" href="#auto-loading-languages" title="Permalink to this headline">¶</a></h3>
    598. 

  598. <p>If you find that you need a particular language globally throughout your
    599. 

  599. application, you can tell CodeIgniter to <a class="reference internal" href="../general/autoloader.html"><span class="doc">auto-load</span></a> it during system initialization. This is done
    600. 

  600. by opening the <strong>application/config/autoload.php</strong> file and adding the
    601. 

  601. language(s) to the autoload array.</p>
    602. 

  602. </div>
    603. 

  603. </div>
    604. 

  604. <div class="section" id="class-reference">
    605. 

  605. <h2><a class="toc-backref" href="#id11">Class Reference</a><a class="headerlink" href="#class-reference" title="Permalink to this headline">¶</a></h2>
    606. 

  606. <dl class="class">
    607. 

  607. <dt id="CI_Lang">
    608. 

  608. <em class="property">class </em><code class="descname">CI_Lang</code><a class="headerlink" href="#CI_Lang" title="Permalink to this definition">¶</a></dt>
    609. 

  609. <dd><dl class="method">
    610. 

  610. <dt id="CI_Lang::load">
    611. 

  611. <code class="descname">load</code><span class="sig-paren">(</span><em>$langfile</em><span class="optional">[</span>, <em>$idiom = ''</em><span class="optional">[</span>, <em>$return = FALSE</em><span class="optional">[</span>, <em>$add_suffix = TRUE</em><span class="optional">[</span>, <em>$alt_path = ''</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Lang::load" title="Permalink to this definition">¶</a></dt>
    612. 

  612. <dd><table class="docutils field-list" frame="void" rules="none">
    613. 

  613. <col class="field-name" />
    614. 

  614. <col class="field-body" />
    615. 

  615. <tbody valign="top">
    616. 

  616. <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
    617. 

  617. <li><strong>$langfile</strong> (<em>mixed</em>) – Language file to load or array with multiple files</li>
    618. 

  618. <li><strong>$idiom</strong> (<em>string</em>) – Language name (i.e. ‘english’)</li>
    619. 

  619. <li><strong>$return</strong> (<em>bool</em>) – Whether to return the loaded array of translations</li>
    620. 

  620. <li><strong>$add_suffix</strong> (<em>bool</em>) – Whether to add the ‘_lang’ suffix to the language file name</li>
    621. 

  621. <li><strong>$alt_path</strong> (<em>string</em>) – An alternative path to look in for the language file</li>
    622. 

  622. </ul>
    623. 

  623. </td>
    624. 

  624. </tr>
    625. 

  625. <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Array of language lines if $return is set to TRUE, otherwise void</p>
    626. 

  626. </td>
    627. 

  627. </tr>
    628. 

  628. <tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p>
    629. 

  629. </td>
    630. 

  630. </tr>
    631. 

  631. </tbody>
    632. 

  632. </table>
    633. 

  633. <p>Loads a language file.</p>
    634. 

  634. </dd></dl>
    635. 

  635. 

  636. <dl class="method">
    637. 

  637. <dt id="CI_Lang::line">
    638. 

  638. <code class="descname">line</code><span class="sig-paren">(</span><em>$line</em><span class="optional">[</span>, <em>$log_errors = TRUE</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Lang::line" title="Permalink to this definition">¶</a></dt>
    639. 

  639. <dd><table class="docutils field-list" frame="void" rules="none">
    640. 

  640. <col class="field-name" />
    641. 

  641. <col class="field-body" />
    642. 

  642. <tbody valign="top">
    643. 

  643. <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
    644. 

  644. <li><strong>$line</strong> (<em>string</em>) – Language line key name</li>
    645. 

  645. <li><strong>$log_errors</strong> (<em>bool</em>) – Whether to log an error if the line isn’t found</li>
    646. 

  646. </ul>
    647. 

  647. </td>
    648. 

  648. </tr>
    649. 

  649. <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Language line string or FALSE on failure</p>
    650. 

  650. </td>
    651. 

  651. </tr>
    652. 

  652. <tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">string</p>
    653. 

  653. </td>
    654. 

  654. </tr>
    655. 

  655. </tbody>
    656. 

  656. </table>
    657. 

  657. <p>Fetches a single translation line from the already loaded language files,
    658. 

  658. based on the line’s name.</p>
    659. 

  659. </dd></dl>
    660. 

  660. 

  661. </dd></dl>
    662. 

  662. 

  663. </div>
    664. 

  664. </div>
    665. 

  665. 

  666. 

  667.           </div>
    668. 

  668.           <footer>
    669. 

  669.   
    670. 

  670.     <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
    671. 

  671.       
    672. 

  672.         <a href="loader.html" class="btn btn-neutral float-right" title="Loader Class">Next <span class="fa fa-arrow-circle-right"></span></a>
    673. 

  673.       
    674. 

  674.       
    675. 

  675.         <a href="javascript.html" class="btn btn-neutral" title="Javascript Class"><span class="fa fa-arrow-circle-left"></span> Previous</a>
    676. 

  676.       
    677. 

  677.     </div>
    678. 

  678.   
    679. 

  679. 

  680.   <hr/>
    681. 

  681. 

  682.   <div role="contentinfo">
    683. 

  683.     <p>
    684. 

  684.         &copy; Copyright 2014 - 2019, British Columbia Institute of Technology.
    685. 

  685.       Last updated on Sep 19, 2019.
    686. 

  686.     </p>
    687. 

  687.   </div>
    688. 

  688. 

  689.   Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>.
    690. 

  690.   
    691. 

  691. </footer>
    692. 

  692.         </div>
    693. 

  693.       </div>
    694. 

  694. 

  695.     </section>
    696. 

  696. 

  697.   </div>
    698. 

  698.   
    699. 

  699. 

  700. 

  701.   
    702. 

  702. 

  703.     <script type="text/javascript">
    704. 

  704.         var DOCUMENTATION_OPTIONS = {
    705. 

  705.             URL_ROOT:'../',
    706. 

  706.             VERSION:'3.1.11',
    707. 

  707.             COLLAPSE_INDEX:false,
    708. 

  708.             FILE_SUFFIX:'.html',
    709. 

  709.             HAS_SOURCE:  false
    710. 

  710.         };
    711. 

  711.     </script>
    712. 

  712.       <script type="text/javascript" src="../_static/jquery.js"></script>
    713. 

  713.       <script type="text/javascript" src="../_static/underscore.js"></script>
    714. 

  714.       <script type="text/javascript" src="../_static/doctools.js"></script>
    715. 

  715. 

  716.   
    717. 

  717. 

  718.   
    719. 

  719.   
    720. 

  720.     <script type="text/javascript" src="../_static/js/theme.js"></script>
    721. 

  721.   
    722. 

  722. 

  723.   
    724. 

  724.   
    725. 

  725.   <script type="text/javascript">
    726. 

  726.       jQuery(function () {
    727. 

  727.           SphinxRtdTheme.StickyNav.enable();
    728. 

  728.       });
    729. 

  729.   </script>
    730. 

  730.    
    731. 

  731. 

  732. </body>
    733. 

  733. </html>
    734.