3v4l.org

run code in 300+ PHP versions simultaneously
<?php function evalCrossTotal($strMD5) { $intTotal = 0; $arrMD5Chars = str_split($strMD5, 1); foreach ($arrMD5Chars as $value) { $intTotal += '0x0'.$value; } return $intTotal; } function encryptString($strString, $strPassword) { // $strString is the content of the entire file with serials $strPasswordMD5 = md5($strPassword); $intMD5Total = evalCrossTotal($strPasswordMD5); $arrEncryptedValues = array(); $intStrlen = strlen($strString); for ($i=0; $i<$intStrlen; $i++) { $arrEncryptedValues[] = ord(substr($strString, $i, 1)) + ('0x0' . substr($strPasswordMD5, $i%32, 1)) - $intMD5Total; $intMD5Total = evalCrossTotal(substr(md5(substr($strString,0,$i+1)), 0, 16) . substr(md5($intMD5Total), 0, 16)); } return implode(' ' , $arrEncryptedValues); } ?>
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
preferences:
289.71 ms | 404 KiB | 339 Q