php hash（'crc32'）和crc32（）返回不同的值

Question

i want to ask about PHP crc32 hashing. i'm tried using hash('md5','value') and md5('value') its return same output.

output : 2063c1608d6e0baf80249c42e2be5804

but when i'm try to use hash('crc32','value') and crc32('value') its return different output.

hash() output : e0a39b72

crc32() output : 494360628

anyone know why it can return a different output?

thanks :)

Answer 1

hash("crc32b", $str) will return the same string as str_pad(dechex(crc32($str)), 8, '0', STR_PAD_LEFT).

See manual and also about difference between crc32 and crc32b