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run code in 300+ PHP versions simultaneously
<?php // generate random string given length function genString($length = 22){ $s = ''; $chars = array_merge(range('A','Z'), range('a','z'), range(0,9)); while($length > 0){ $randKey = array_rand($chars, 1); $s .= $chars[$randKey]; $length--; } return $s; } $prefix = (PHP_VERSION_ID >= 50307) ? '$2y$' : '$2a$'; $salt = $prefix.genString(); //echo 'Salt: '.$salt.'<br>'; $password = 'password'; $hash = crypt($password, $salt); echo 'Strlen: '.strlen($hash).' ------ '; if (crypt($password, $hash) == $hash) { echo "Password verified!"; }

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