Object oriented method calling from a different class

can this be done?

[ryan_b83]

Hello, how do you call a method from a class, while you are in a method of a differeent class?

EXAMPLE:

class ABC{
function APPLE{
//CODE GOES HERE
}
}

class XYZ{
function ORANGE{
$ABC->APPLE(); //I tried this, but i cant get it to work?
}
}

Anyone know? thanx

[ryan_b83]

Actually, here is the EXACT code:

<?
class ABC{
 function APPLE(){
  echo "APPLE!";
 }
}
class XYZ{
 function ORANGE(){
  $ABC->APPLE(); //I tried this, but i cant get it to work?
 }
} 
$ABC = new ABC();
$XYZ = new XYZ();
$XYZ->ORANGE();
?>

THE ERROR:

Fatal error: Call to a member function on a non-object in /home/mysite/public_html/test.php on line 11

[ericjust]

Hi Ryan,

To make the code work how you have it written, you will have to add this line:

function ORANGE(){
global $ABC;
$ABC->APPLE();
}

The instance of class ABC (in this case $ABC) is not naturally accessible from within this class method. It's the same as any other variable declared outside a function or class. We need to bring in the global variable holding the instance of the class.

You can also call a static method from another class without having to use the instance of the class. If your method that you are calling (APPLE()) doesn't use $this-> than you can probably call the method from within another class like this:

function ORANGE(){
ABC::APPLE();
}

Hope this helps,
Let me know if you would like further explanation.