- base64_decode: documentation ( source)
- base64_encode: documentation ( source)
<?php
echo base64_encode('Hi'); // SGk=
echo base64_decode('SGk='); // Hi
echo 'Hi'; // Hi
eval('echo "Hi";'); // Hi
//echo base64_encode('echo "Hi";'); // ZWNobyAiSGkiOw==
eval(base64_decode('ZWNobyAiSGkiOw=='));