nntoan / Gojira

        if (function_exists('openssl_random_pseudo_bytes')) {

            // use openssl lib if it is installed

            for ($i = 0, $lc = strlen($chars) - 1; $i < $length; $i++) {

                $bytes = openssl_random_pseudo_bytes(PHP_INT_SIZE);

                $hex = bin2hex($bytes); // hex() doubles the length of the string

                $rand = abs(hexdec($hex) % $lc); // random integer from 0 to $lc

                $str .= $chars[$rand]; // random character in $chars

            }

        } elseif ($fp = fopen('/dev/urandom', 'rb')) {

            // attempt to use /dev/urandom if it exists but openssl isn't available

            for ($i = 0, $lc = strlen($chars) - 1; $i < $length; $i++) {

            }

        } elseif ($fp = fopen('/dev/urandom', 'rb')) {

            // attempt to use /dev/urandom if it exists but openssl isn't available

            for ($i = 0, $lc = strlen($chars) - 1; $i < $length; $i++) {

                $bytes = fread($fp, PHP_INT_SIZE);

                $hex = bin2hex($bytes); // hex() doubles the length of the string

                $rand = abs(hexdec($hex) % $lc); // random integer from 0 to $lc

                $str .= $chars[$rand]; // random character in $chars

            }

            fclose($fp);

        } else {

            throw new \Gojira\Framework\Exception\LocalizedException(