[PHP]Comparison

name = "changed box";

$another_box = new Box();

// == is casual and just checks to see if the attributes are the same
echo $box == $box_reference ? 'true' : 'false'; // true
echo "
";
echo $box == $box_clone ? 'true' : 'false';  // true
echo "
";
echo $box == $box_changed ? 'true' : 'false'; // false
echo "
";
echo $box == $another_box ? 'true' : 'false'; // true
echo "

";                          

// === is strict and checks to see if they reference the same object
echo $box === $box_reference ? 'true' : 'false'; // true
echo "
";
echo $box === $box_clone ? 'true' : 'false';  // false
echo "
";
echo $box === $box_changed ? 'true' : 'false';  // false
echo "
";
echo $box === $another_box ? 'true' : 'false';  // false
echo "
";

?>

true
true
false
true

true
false
false
false