How to convert PHP's crc32 hash into the MySQL equivalent?

Question

Apparently MySQL\'s CRC32() function returns an unsigned BIGINT, while PHP returns hexadecimal value.

In PHP:

hash(\'crc32\',\'hello world\') == 7813f744

Answer 1

It is possible to use the wrapper function that returns the same value as in mysql:

function mysql_compatible_crc32($s) {
    $r = crc32($s);
    if($r<0) {
        return 4294967296+$r;
    }
    return $r;
}