Online PHP editor | refs for JKdNk

<?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";