Online PHP editor | perf for KFkXO

<?php function padding($msg,$nb_chars) { $charset = array('a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','0','1','2','3','4','5','6','7','8','9'); for($cpt=0;$cpt<$nb_chars;$cpt++) { $rand = rand(0,61); print("!!!!!!!!!!!!!!!!!".$rand); $msg .= $charset[$rand]; } return $msg; } function mac($msg) { $key = "7h3_1337_k3y"; $nonce = "5uc3m01"; $bloc_size = 64; if(strlen($msg)<$bloc_size) { $msg = padding($msg,$bloc_size-strlen($msg)); $mac = $msg; } else if(strlen($msg)==$bloc_size) { $mac = $msg; } else if(strlen($msg)>$bloc_size) { $mac = hash_hmac("sha512",$msg.$nonce,$key,true); } return crypt($mac,'$6$rounds=5000$OhMyG05h!'); } $lemessage="UNMESSAGEASSEZLONGPOURTOMBERDANSLECASDUHASHMAPETREGENERERUNHASHAVECLEHASHDECETTEVALEUR"; $mac = mac($lemessage); $valuemac=hash_hmac("sha512","$lemessage".5uc3m01","7h3_1337_k3y",false); print("**".strlen($valuemac)."***".$valuemac."*******"); $mac2=eval('return hex2bin("c210825a47af7f8869fb6e11adc9dd3eceb85735c47807badaff958f0af386f5e3f7e24c15034ff6dc71d117697f5853da05bb76ec7086d07f25b53f707d9477");'); $b=mac($mac2); if($mac==$b) { print("OK"); } else{ print("KO"); } print($mac); print($b);

Version	System time (s)	User time (s)	Memory (MiB)
7.0.0	0.000	0.043	20.27
5.6.16	0.003	0.067	20.55
5.6.15	0.010	0.060	18.28
5.6.14	0.003	0.083	18.18
5.6.13	0.010	0.073	18.16
5.6.12	0.007	0.067	21.14
5.6.11	0.007	0.037	21.14
5.6.10	0.007	0.037	21.07
5.6.9	0.007	0.040	21.03
5.6.8	0.007	0.077	20.45
5.5.30	0.000	0.067	18.05
5.5.29	0.010	0.087	18.02
5.5.28	0.007	0.080	20.79
5.5.27	0.007	0.083	20.83
5.5.26	0.003	0.047	20.89
5.5.25	0.003	0.087	20.57
5.5.24	0.027	0.070	20.26