<?php
/**
* @version $Id: str_split.php 16235 2010-04-20 04:13:25Z pasamio $
* @package utf8
* @subpackage strings
*/
//---------------------------------------------------------------
/**
* UTF-8 aware alternative to str_split
* Convert a string to an array
* Note: requires utf8_strlen to be loaded
* @param string UTF-8 encoded
* @param int number to characters to split string by
* @return string characters in string reverses
* @see http://www.php.net/str_split
* @see utf8_strlen
* @package utf8
* @subpackage strings
*/
function utf8_str_split($str, $split_len = 1) {
if ( !preg_match('/^[0-9]+$/',$split_len) || $split_len < 1 ) {
return FALSE;
}
$len = utf8_strlen($str);
if ( $len <= $split_len ) {
return array($str);
}
preg_match_all('/.{'.$split_len.'}|[^\x00]{1,'.$split_len.'}$/us', $str, $ar);
return $ar[0];
}