Convert MD5 to base62 for URL

Question

I have a script to convert to base 62 (A-Za-z0-9) but how do I get a number out of MD5?

I have read in many places that because the number from an MD5 is bigger than

Answer 1

You can do something like this,

$hash = md5("The data to be hashed", true);
$ints = unpack("L*num", $hash);

$hash_str = base62($ints['num1']) . base62($ints['num2']) . base62($ints['num3']) . base62($ints['num4'])