| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> |
| <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> |
| <head> |
| |
| <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> |
| <title>Compatibility Helper : CodeIgniter User Guide</title> |
| |
| <style type='text/css' media='all'>@import url('../userguide.css');</style> |
| <link rel='stylesheet' type='text/css' media='all' href='../userguide.css' /> |
| |
| <script type="text/javascript" src="../nav/nav.js"></script> |
| <script type="text/javascript" src="../nav/prototype.lite.js"></script> |
| <script type="text/javascript" src="../nav/moo.fx.js"></script> |
| <script type="text/javascript" src="../nav/user_guide_menu.js"></script> |
| |
| <meta http-equiv='expires' content='-1' /> |
| <meta http-equiv= 'pragma' content='no-cache' /> |
| <meta name='robots' content='all' /> |
| <meta name='author' content='ExpressionEngine Dev Team' /> |
| <meta name='description' content='CodeIgniter User Guide' /> |
| |
| </head> |
| <body> |
| |
| <!-- START NAVIGATION --> |
| <div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div> |
| <div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div> |
| <div id="masthead"> |
| <table cellpadding="0" cellspacing="0" border="0" style="width:100%"> |
| <tr> |
| <td><h1>CodeIgniter User Guide Version 1.7.2</h1></td> |
| <td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td> |
| </tr> |
| </table> |
| </div> |
| <!-- END NAVIGATION --> |
| |
| |
| <!-- START BREADCRUMB --> |
| |
| <table cellpadding="0" cellspacing="0" border="0" style="width:100%"> |
| <tr> |
| <td id="breadcrumb"> |
| <a href="http://codeigniter.com/">CodeIgniter Home</a> › |
| <a href="../index.html">User Guide Home</a> › |
| Compatibility Helper |
| </td> |
| <td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="codeigniter.com/user_guide/" />Search User Guide <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" /> <input type="submit" class="submit" name="sa" value="Go" /></form></td> |
| </tr> |
| </table> |
| <!-- END BREADCRUMB --> |
| |
| <br clear="all" /> |
| |
| |
| <!-- START CONTENT --> |
| <div id="content"> |
| |
| |
| <h1>Compatibility Helper</h1> |
| |
| <p>The Compatibility Helper file contains PHP 4 implementations of some PHP 5 only native PHP functions and constants. This can be useful |
| if you'd like to take advantage of some of these native function but your application may end up running on a PHP 4 server. |
| In these cases, it may be advantageous to <a href="../general/autoloader.html">Auto-load</a> the Compatibility Helper so you |
| do not have to load it in each controller.</p> |
| |
| <p class="important"><strong>Note:</strong> There are a few compatibility functions that are in CodeIgniter's native Compat.php file. |
| You may use those functions without loading this helper. The functions are split between that file and this Helper so that only |
| functions required by the framework are included by default. This way, whether or not you load the additional functions in this Helper |
| remains your choice.</p> |
| |
| <h2>Loading this Helper</h2> |
| |
| <p>This helper is loaded using the following code:</p> |
| <code>$this->load->helper('compatibility');</code> |
| |
| <h2>Available Constants</h2> |
| <p>The following constants are available:</p> |
| |
| <h3>PHP_EOL</h3> |
| <p>The newline character for the server's current OS, e.g. on Windows systems "\r\n", on *nix "\n". |
| |
| <h2>Available Functions</h2> |
| <p>The following functions are available (see linked PHP documentation for documentation):</p> |
| |
| <h3><a href="http://us.php.net/manual/en/function.file-put-contents.php">file_put_contents()</a> - The fourth parameter, <var>$context</var>, is not supported.</h3> |
| |
| <h3><a href="http://us.php.net/manual/en/function.fputcsv.php">fputcsv()</a></h3> |
| |
| <h3><a href="http://us.php.net/manual/en/function.http-build-query.php">http_build_query()</a></h3> |
| |
| <h3><a href="http://us.php.net/manual/en/function.str-ireplace.php">str_ireplace()</a> - The fourth parameter, <var>$count</var>, is not supported, as PHP 4 would make it become required.</h3> |
| |
| <h3><a href="http://us.php.net/manual/en/function.stripos.php">stripos()</a></h3> |
| |
| |
| |
| |
| |
| |
| |
| </div> |
| <!-- END CONTENT --> |
| |
| |
| <div id="footer"> |
| <p> |
| Previous Topic: <a href="array_helper.html">Array Helper</a> |
| · |
| <a href="#top">Top of Page</a> · |
| <a href="../index.html">User Guide Home</a> · |
| Next Topic: <a href="cookie_helper.html">Cookie Helper</a> |
| </p> |
| <p><a href="http://codeigniter.com">CodeIgniter</a> · Copyright © 2006-2010 · <a href="http://ellislab.com/">Ellislab, Inc.</a></p> |
| </div> |
| |
| </body> |
| </html> |