class_compare.php

<?php 
 //class_compare.php
 class a {


     public $name   = '';
     public $age=1;


     public function __construct($name,$age) {
         $this->name   = $name;
         $this->age = $age;
     }


 }


 class b {


     public $name   = '';
     public $age=1;


     public function __construct($name,$age) {
         $this->name   = $name;
         $this->age = $age;
     }


 }


 //这里创建线程池.
 $obj1 = new a('a',2);
 $obj2 = new a('a',2);
 $obj3 = new b('a',2);
 $obj4 = new b('b',3);


 if($obj1==$obj2)
     echo '$obj1==$obj2' . '<hr>';
 else
     echo '$obj1!=$obj2' . '<hr>';




 if($obj1===$obj2)
     echo '$obj1===$obj2' . '<hr>';
 else
     echo '$obj1!===$obj2' . '<hr>';


 if($obj1==$obj3)
     echo '$obj1==$obj3' . '<hr>';
 else
     echo '$obj1!=$obj3' . '<hr>';




 if($obj3==$obj4)
     echo '$obj3==$obj4' . '<hr>';
 else
     echo '$obj3!=$obj4' . '<hr>';

$obj1==$obj2

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$obj1!===$obj2

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$obj1!=$obj3

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$obj3!=$obj4

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