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<?php $hash = password_hash("foobar", PASSWORD_DEFAULT); $new = str_replace('$2y$', '$2a$', $hash); var_dump(password_verify('foobar', $hash)); var_dump(password_verify('foobar', $new)); var_dump(password_needs_rehash($new, PASSWORD_DEFAULT)); var_dump(password_needs_rehash($new, PASSWORD_DEFAULT, ['cost' => 12]));
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.26, 7.3.0 - 7.3.13, 7.4.0 - 7.4.1
bool(true) bool(true) bool(true) bool(true)
preferences:
142.96 ms | 403 KiB | 157 Q