PHP corrupted serialized string fixer, usefull for Wordpress options data

php_serilizer.php

function serialize_corrector($serialized_string){
    // at first, check if "fixing" is really needed at all. After that, security checkup.
    if ( @unserialize($serialized_string) !== true &&  preg_match('/^[aOs]:/', $serialized_string) ) {
         $serialized_string = preg_replace_callback( '/s\:(\d+)\:\"(.*?)\";/s',    function($matches){return 's:'.strlen($matches[2]).':"'.$matches[2].'";'; },   $serialized_string );
    }
    return $serialized_string;
}