3v4l.org

run code in 500+ PHP versions simultaneously
<?php $hA = str_repeat('A', 65); $hB = \hash('sha256', $hA, true); echo $hA . "\n===\n0x" . bin2hex($hB) . "\n\n"; var_dump( hash_hmac('sha256', 'test', $hA) === hash_hmac('sha256', 'test', $hB) ); var_dump( hash_pbkdf2('sha256', $hA, 'test', 10000, 32) === hash_pbkdf2('sha256', $hB, 'test', 10000, 32) );
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA === 0x836203944f4c0280461ad73d31457c22ba19d1d99e232dc231000085899e00a2 bool(true) bool(true)

preferences:
116.6 ms | 2145 KiB | 4 Q