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Extended Classes


mahdoum2

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I have a main class and other sub classes that are extensions of the main class. I want to have a variable in the main class that can be affected by the sub classes... I'll try to explain better.

$main = new MAIN; // main class
$sub = new SUB;// sub class 1 extension of main
$sub2 = new SUB2; //sub class 2 extension of main

$sub->testvar++;
echo $sub->testvar; //test var is located in the main class
// will output 1

$sub2->testvar++;
echo $sub2>testvar;
//wil output 1

What I want the program to do is realise that testvar has been changed by sub and i want sub2 to output 2 and not 1.

I'm not sure how to implement this into classes, I realise that sub and sub2 both have same structure of main but completly different memory addresses.

So how can I fix this?
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