php - Accessing variables and methods outside of class definitions

Question

Suppose I have a php file along these lines:

<?php
function abc() {  }

$foo = 'bar';

class SomeClass {  }
?>

Is there anything special I have to do to use abc() and $foo inside SomeClass? I'm thinking along the lines of using global in a function to access variables defined outside the function.

(I'm new to OOP in PHP)

Answer 1

functions outside any class are global an can be called from anywhere. The same with variables.. just remember to use the global for the variables...

e.g

<?php
function abc() {  }

$foo = 'bar';

class SomeClass {  
 public function tada(){
     global $foo;

     abc();
     echo 'foo and '.$foo;
 }
}
?>