+ + +

Compatibility Helper

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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 Auto-load the Compatibility Helper so you + do not have to load it in each controller.

+ +

Note: 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.

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Loading this Helper

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This helper is loaded using the following code:

+$this->load->helper('compatibility'); + +

Available Constants

The following constants are available:

+ +

PHP_EOL

The newline character for the server's current OS, e.g. on Windows systems "\r\n", on *nix "\n". + +

Available Functions

The following functions are available (see linked PHP documentation for documentation):

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file_put_contents() - The fourth parameter, `$context`, is not supported.

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fputcsv()

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http_build_query()

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str_ireplace() - The fourth parameter, `$count`, is not supported, as PHP 4 would make it become required.

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stripos()

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CodeIgniter User Guide Version 1.6.1