Imagick is a awesome library for hackers to break `disable_functions`.
So I installed php-imagick in the server, opened a `backdoor` for you.
Let's try to execute `/readflag` to get the flag.
Open basedir: /var/www/html:/tmp/b6214b1f9e36c624ebfe9576cfd0aec8
Hint: eval($_POST["backdoor"]);