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<?php
/**
* Elgg wrapper functions for multibyte string support.
*
* @package Elgg
* @subpackage Core
* @author Curverider Ltd
* @link http://elgg.org/
*/
/**
* Wrapper function: Returns the result of mb_strtolower if mb_support is present, else the
* result of strtolower is returned.
*
* @param string $string The string.
* @param string $charset The charset (if multibyte support is present) : default 'UTF8'
* @return string
*/
function elgg_strtolower($string, $charset = 'UTF8') {
if (is_callable('mb_strtolower')) {
return mb_strtolower($string, $charset);
}
return strtolower($string);
}
/**
* Wrapper function: Returns the result of mb_strtoupper if mb_support is present, else the
* result of strtoupper is returned.
*
* @param string $string The string.
* @param string $charset The charset (if multibyte support is present) : default 'UTF8'
* @return string
*/
function elgg_strtoupper($string, $charset = 'UTF8') {
if (is_callable('mb_strtoupper')) {
return mb_strtoupper($string, $charset);
}
return strtoupper($string);
}
/**
* Wrapper function: Returns the result of mb_substr if mb_support is present, else the
* result of substr is returned.
*
* @param string $string The string.
* @param int $start Start position.
* @param int $length Length.
* @param string $charset The charset (if multibyte support is present) : default 'UTF8'
* @return string
*/
function elgg_substr($string, $start = 0, $length = null, $charset = 'UTF8') {
if (is_callable('mb_substr')) {
return mb_substr($string, $start, $length, $charset);
}
return substr($string, $start, $length);
}
// TODO: Other wrapper functions
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