How to generate a hash in php?

Question

PHP

It is necessary to generate a hash that has a minimum number of collisions
Tried hexdec(crc32()), but it gives duplicates, pp

Answer 1

There are many hashing functions in php, which differ both in hash length and in speed and purpose.
php.net/manual/en/refs.crypto.php
If you need a unique id, then php.net/manual/en/function.uniqid.php
If you need passwords, then here: php.net/manual/en/faq. passwords.php

Answer 2

hash\hash_hmac and remove regular digit. crc32 not generating numeric hash