Comparing two objects in php

$areSame = (serialize($ob1) === serialize($ob2));

This easy way of comparing two objects in php.It will take in account object variables.
Example :

class ob1{
	public $number = 1;
}
class ob2{
	public $number = 1;
}

$areSame = serialize(new ob1()) === serialize(new ob2())
//$areSame = true;

class ob1{
	public $number = 1;
}
class ob2{
	public $number = 2;
}

$areSame = serialize(new ob1()) === serialize(new ob2())
//$areSame = false;

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