PHP function returning boolean

Question

How can I have a boolean returning function?
I mean like this on other programming language.

return true; // return false

Answer 1

<?php

  function doSomething() {
    return true;
  }

The function you need could look like this:

  function check($var, $length) { 
    return (strlen($var)<=$length) && (isset($var));
  }

?>