3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'POST\n/auth/token\nproject=xRxyG0P5&ai=95335e7caf2f6a92&tm=1513574899'; $key = 'e68c202f73c54468b9822c843b320d34'; $signature = String2Hex(hash_hmac("sha256", $str, $key, true)); function String2Hex($string){ $hex=''; for ($i=0; $i < strlen($string); $i++){ $hex .= dechex(ord($string[$i])); } return $hex; } echo $signature;exit; ?>

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