- var_dump: documentation ( source)
- crypt: documentation ( source)
- password_verify: documentation ( source)
<?php
$input = 'correct-password';
$hash_from_crypt = crypt($input, '$1$$');
# correct
var_dump(password_verify($input, $hash_from_crypt));
# wrong
var_dump(password_verify('wrong-password', $hash_from_crypt));