Cacher is the code snippet organizer for pro developers

<?php
// REF: http://php.net/manual/en/language.references.return.php

<?php

class Foo {

    protected $bar; // this is where the instance of Bar will be stored

    public function __construct() {
    	// get instance of Bar, since this is the first line to be executed and calls the Bar constructor
    	// it is going to first print "Bar"
        $this->bar = new Bar(); 

        print "Foo\n";  // after Bar this is what is printed
    }    
    
    public function getBar() {
      // return an instance of Bar()
      // return new Bar() , first prints "Bar"
        return $this->bar; 
    }
}

// ----------------------------------------

class Bar {

    public function __construct() {
        print "Bar\n";
    }
    
    public function helloWorld() {
        print "Hello World\n";
    }
}

function test() {
    return new Foo();
}



// foo_object->getBar()   -> helloWorld()      Bar  Foo 
//             bar_object -> helloWorld()           Bar  Foo  Hello World
//            Hello World
test()->getBar()->helloWorld();

// RESULT:   Bar Foo Hello World