Check to see if a string is serialized?

Question

What\'s the best way to determine whether or not a string is the result of the serialize() function?

https://www.php.net/manual/en/function.serialize

Answer 1

$data = @unserialize($str);
if($data !== false || $str === 'b:0;')
    echo 'ok';
else
    echo "not ok";

Correctly handles the case of serialize(false). :)