unserialize反序列化错误的解决办法

function mb_unserialize($serial_str) {
    $serial_str = str_replace("\r", "", $serial_str);
    $serial_str = preg_replace(‘!s:(\d+):"(.*?)";!se‘, "‘s:‘.strlen(‘$2‘).‘:\"$2\";‘", $serial_str );
    return unserialize($serial_str);
}

function asc_unserialize($serial_str) {
 $serial_str= str_replace("\r", "", $serial_str);
 $serial_str = preg_replace(‘!s:(\d+):"(.*?)";!se‘, ‘"s:".strlen("$2").":\"$2\";"‘, $serial_str );
 return unserialize($serial_str);
}