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| <td><h1>CodeIgniter User Guide Version 1.6.3</h1></td> | |
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| Compatibility Helper | |
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| <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> | |
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