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Copy pathstr_split.php
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32 lines (28 loc) · 763 Bytes
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<?php
/**
* @package utf8
*/
//---------------------------------------------------------------
/**
* 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
*/
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 <= $split_len) {
return [$str];
}
preg_match_all('/.{' . $split_len . '}|[^\x00]{1,' . $split_len . '}$/us', $str, $ar);
return $ar[0];
}