Question

on a manual about overloading i couldn’t grasp one of the threads. The code is below:

<?php

class a
{
   function __get($v)
   {
       $this->$v = new $v;
       return $this->$v;
   }
}

class b
{
    function say($word){
        echo $word;
    }
}
$a = new a();
$a->b->say('hello world');

// echos 'hello world'
?> 

As it has been pointed in the commented line, it echoes hello world. But even though b hasn’t been instantiated how is it being called? Please help, the link to manual is here, entry is belong to user named trash80 at gmail dot com

Answer 1

What it does:

$a->b:

function __get('b'){
    $this->b = new b;
    return $this->b;
}

$a->b->say('hello world'):

function say('hello world'){
    echo 'hello world';
}