Ben PHP ile uğraştığım zamanlarda https://codecanyon.net/item/php-enco...cator/12925043 bunu kullanıyordum. Sizin için basit bir örnek yaptım belki işinize yarar diye
Orjinal kod

try {
    global $db;
    $db = new PDO("mysql:host=" . $config['panel_ip'] . ";dbname=" . $config['panel_dbname'], $config['panel_user'], $config['panel_pass']);
} catch (PDOException $e) {
    print $e->getMessage();
}

Şifrelenmiş hali

<?php /* Do not change this code, or your script will not work. Checksum: c9f0f895fb98ab9159f51fd0297e236d */ eval(base64_decode("JE8wTzBPMDBPME89ZmlsZShwcmVnX3JlcGxhY2UoIkBcKC4qXCguKiRAIiwiIixfX0ZJTEVfXykpOwppZihwcmVnX3JlcGxhY2UoIkBcKC4qXCguKiRAIiwiIixfX0ZJTEVfXyk9PV9fRklMRV9fIG9yCnByZWdfcmVwbGFjZSgiQFwoLipcKC4qJEAiLCIiLF9fTElORV9fKSAhPSAzKWRpZSgiPHR0PkVSUk9SIik7"));eval(base64_decode("ZnVuY3Rpb24gSUkxMWxJSTExMSgkYSwkYil7JGM9YXJyYXkoOTcwLDMyNCwzMiwyMDIpOyRrPWd6aW5mbGF0ZShiYXNlNjRfZGVjb2RlKCJLeXJOVGNvc0tRWUEiKSk7JE8wTzA9JGtbNl0uJGtbMV0uJGtbM10uJGtbNl0uJGtbNV0uJGtbMF07JE8wPSIka1s1XSRrWzBdJGtbNF0ka1syXSI7aWYoJGI9PTIwKXskZD0kTzBPMCgkYSwkY1swXSskY1sxXSwkY1syXSk7fWVsc2VpZigkYj09NzMpeyRkPSRPME8wKCRhLCRjWzBdLCRjWzFdKTt9ZWxzZWlmKCRiPT03OSl7JGQ9JE8wKCRPME8wKCRhLCRjWzBdKyRjWzFdKyRjWzJdKSk7fXJldHVybiRkO30="));eval(base64_decode(II11lII111($O0O0O00O0O[0],73)));eval(Il11lI1lI1(II11lII111($O0O0O00O0O[0],79),II11lII111($O0O0O00O0O[0],20),$O0O0O00O0O));__halt_compiler();8aWYoIWZ1bmN0aW9uX2V4aXN0cygiSWwxMWxJMWxJMSIpKXtmdW5jdGlvbiBJbDExbEkxbEkxKCRhLCRiLCRjKXskZD1pbXBsb2RlKCRjKTskZD1wcmVnX3JlcGxhY2UoIi9fX2hhbHRfY29tcGlsZXIuKi8iLCIiLCRkKTtpZigkYj09aGFzaCgibWQ1IiwiJGQiKSl7cmV0dXJuKGd6aW5mbGF0ZShiYXNlNjRfZGVjb2RlKCRhKSkpO31lbHNle2RpZSgiPHR0Pm1kNSBDb2RlIG1hbmlwdWxhdGlvbiBkZXRlY3RlZDwvdHQ+Iik7fX19c3c687a2a2d5ba05eebacbd12d47e3c3bY5BCsIwEEX3gncYSiEpqAew1FVdiu6lSJKOaSBNYieiRby7weJGOqvP+3/gxWGE13IB6bT1UljIW1lOICWowOEDTvWRZ/1IN7vtPMUqgw3kyrur0WcWhEN7MYE1iWZlK53ocW4yNaxZ/Rd3wmEGB0HEmiLZvEGJqDrgSWT/VBii8Q5yLH7uYTAuJrDeaYwHJBIa+ffzAw