/**
* Multibyte substr() implementation
*
* @param string $str The string to substr()
* @param integer $start The first position used
* @param integer $length The maximum length of the returned string
*
* @return string Portion of $str specified by $start and $length
* @see Net_Gearman_Connection::$multiByteSupport
* @link http://us3.php.net/mb_substr
* @link http://us3.php.net/substr
*/
public static function subString($str, $start, $length)
{
if (is_null(self::$multiByteSupport)) {
self::$multiByteSupport = intval(ini_get('mbstring.func_overload'));
}
if (self::$multiByteSupport & 2) {
return mb_substr($str, $start, $length, '8bit');
} else {
return substr($str, $start, $length);
}
}