gistfile1.php

<?php
/*
isEnabled() (example):

let's pretend that you have a folder "web_root/module" and in that folder the following files:
Model1.php
Model2.php
Model3.php
Model4.php

Usually you'd have to create a table in your database (tbl_modules: {id,module_name,is_enabled})

and when the `disable` button is clicked you'd do:
1. select from tbl_modules where ...
2. update ...

============================
with this thing you could do it like this:
*/

$cg = new CodeGenerator('modules/Module1.php');
$cg->removeFunction('isEnabled');
$params = array(
    'tokens' => array(
        '%visibility%'      => 'public',
        '%functionName%'    => 'isEnabled',
        '%params%'          => '',
        '%code%'            => 'return false;', // or true if you want to enable it
    )
);
$saved = $cg->createFunction($template = 'function', $params)->save();