External PHP file that can interact with Linux (CentOS) webserver -- 2

Job ID: 31711117

Budget: $30 – $250 USD

I have a Linux (CentOS) webserver that has a PHP script that will execute .sh files.

I need an external PHP script that can interact with the PHP file on the Linux webserver. The PHP will need to work with keys, if an invalid key is passed the .sh files should not be executed.
Related categories: PHP Linux Web Security Apache CentOs