How can I call 2 functions in the same custom module?
You need to add 'access arguments' to your call:

$items['disableproject'] = array(
  'title' =&gt; 'Second function',
  'page callback' =&gt; array('myModule_second_function'),
  'page arguments' =&gt; array(1),
  'access arguments' =&gt; array('some permission'),
);


Or you can add a custom access callback:

$items['disableproject'] = array(
  'title' =&gt; 'Second function',
  'page callback' =&gt; array('myModule_second_function'),
  'page arguments' =&gt; array(1),
  'access callback' =&gt; 'some_access_callback_function',
);