- var_dump: documentation ( source)
- password_hash: documentation ( source)
- password_needs_rehash: documentation ( source)
- password_get_info: documentation ( source)
<?php
$password = 'mypassword';
$hash = password_hash($password);
var_dump(password_get_info($hash));
echo "Password needs rehash? => " . (password_needs_rehash($hash, PASSWORD_DEFAULT));