<?php
$passw = str_pad('x', 70);
var_dump(password_hash($passw, PASSWORD_DEFAULT, ['salt' => str_pad('y', 22)]));
$passw = str_pad('x', 80);
var_dump(password_hash($passw, PASSWORD_DEFAULT, ['salt' => str_pad('y', 22)]));
$passw = str_pad('x', 90);
var_dump(password_hash($passw, PASSWORD_DEFAULT, ['salt' => str_pad('y', 22)]));
preferences:
33.48 ms | 402 KiB | 5 Q