How can multiple classes in PHP access each other's instances for function calls?

To allow multiple classes in PHP to access each other's instances for function calls, you can pass an instance of one class as a parameter to the function of another class. This way, you can call functions of one class from another class by passing the instance as an argument. 

class ClassA {
    public function doSomething() {
        echo "Doing something in Class A\n";
    }
}

class ClassB {
    public function doSomethingWithInstance(ClassA $instance) {
        echo "Calling Class A from Class B\n";
        $instance->doSomething();
    }
}

// Create instances of both classes
$classA = new ClassA();
$classB = new ClassB();

// Call function of ClassB with an instance of ClassA as a parameter
$classB->doSomethingWithInstance($classA);

Keywords

PHP classes instances function calls access

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