3v4l.org

run code in 300+ PHP versions simultaneously
<?php $signData = 'asfl;sdkg;dlk;43t3k4ntj3n4tk34tb3jht3jktb3hj4bt34khgkj34;g34gkjd'; $hmacKey = '346456455675674674674683451324124124324'; $merchantSig = base64_encode(hash_hmac('sha256',$signData,pack("H*" , $hmacKey),true)); echo "PHP with Packing\n"; echo $merchantSig . "\n"; echo "==========\n"; $merchantSig = base64_encode(hash_hmac('sha256',$signData,$hmacKey,true)); echo "PHP without Packing\n"; echo $merchantSig . "\n";
Output for 7.0.0 - 7.0.20, 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
PHP with Packing 0YbdotEeh3GXdp0M5cxFe31rtBZ8LWv3kx0puYF89Bc= ========== PHP without Packing S9oTUz1TXoSddFPICUzCzx2/PODIqbYVRKODDwQHkg4=
preferences:
153.73 ms | 408 KiB | 5 Q