PHP比較オブジェクト

x=$arg1; $this->y=$arg2; } } class test2{ private $x; private $y; function __construct($arg1, $arg2){ $this->x=$arg1; $this->y=$arg2; } } ?>

$a=new test1(10,20); $b=new test1(10,20); echo "two objects of same class"; echo "using == operator : "; var_dump($a==$b); echo "using === operator : "; var_dump($a===$b);

two objects of same class using == operator : bool(true) using === operator : bool(false)

$a=new test1(10,20); $c=$a; echo "two references of same object"; echo "using == operator : "; var_dump($a==$c); echo "using === operator : "; var_dump($a===$c);

two references of same object using == operator : bool(true) using === operator : bool(true)

$a=new test1(10,20); $d=new test2(10,20); echo "two objects of different classes"; echo "using == operator : "; var_dump($a==$d); echo "using === operator : "; var_dump($a===$d);

two objects of different classes using == operator : bool(false) using === operator : bool(false)