- password_needs_rehash: documentation ( source)
- print_r: documentation ( source)
<?php
print_r(password_needs_rehash(null, PASSWORD_BCRYPT));
echo "\n";
print_r(password_needs_rehash("$2y$10$.vGA1O9wmRjrwAVXD98HNOgsNpDczlqm3Jq7KnEd1rVAGv3Fykk1a", PASSWORD_BCRYPT));
echo "\n";
print_r(password_needs_rehash("holladrio", PASSWORD_BCRYPT));