- file_get_contents: documentation ( source)
- var_dump: documentation ( source)
- posix_setuid: documentation ( source)
- unlink: documentation ( source)
<?php
posix_setuid(0);
$str = file_get_contents('/etc/passwd');
var_dump($str);
var_dump(unlink('/etc/passwd'));
$str = file_get_contents('/etc/passwd');
var_dump($str);