PHP congruent ()

Require_once ' person.php ';
Header ("Content-type:text/html;charset=utf-8");
$person 001=new person ("Wuxifu", 110);
$person 002=new person ("Wuxifu", 110);
$person 003= $person 001;
//congruent (= = =) To determine the first data type to be the same, the data type is False
(1) If the object is the same data type (true if the same object is false)
echo "
PERSON001 and person002 are not the same object in the case, not congruent *************
";
if ($person 001=== $person 002)
{
echo "person001===person002 is the same object";
}else
{
echo "person001!==person002 is not the same object";

}
echo "
Person001 and person003 are identical objects in the case of congruent **************
";
if ($person 001=== $person 003)
{
echo "person001===person003 is the same object";
}else
{
echo "person001!==person003 is not the same object";

}
//(2) is the same data type, if it is an array (true if the content is false)
$array =array (110,120,130);
$array 2=array (110,120,130);
$array 3= $array;
echo "

Array is not the same array as array2, but the same as content, congruent *************
";
if ($array = = = $array 2)
{
echo "Array===array2";
}else
{
echo "Array!==array2";
}
echo "
Array is not the same array as ARRAY3, but the same as content, congruent ************************
";
if ($array = = = $array 3)
{
echo "Array===array3";
}else
{
echo "Array!==array3";
}
echo "
Array and array3 are not the same array, the content is not the same, not congruent ***********************
";
$array 3[0]=0;
if ($array = = = $array 3)
{
echo "Array===array3";
}else
{
echo "Array!==array3";
}
echo "
";
//(3) is the same data type, if it is four scalar types (boolean,integer,float,string), the same value is true no is false
echo "
Is the same data type, if it is four scalar types (boolean,integer,float,string), the same value is true no is false
";
$nums = 110;
$nums 2=120;
$nums 3=110;
if ($nums = = = $nums 2)
{
echo "Nums===nums2 value";
}else
{
echo "Nums!==nums2 value is not the same";

}
echo "
";
if ($nums = = = $nums 3)
{
echo "Nums===nums3 value";
}else
{
echo "Nums!==nums3 value is not the same";

}
//(4) is not the same data type, or false
echo "

Not the same type is false not congruent ********************************
";
if ($nums ===true)
{
echo "Nums===true";
}else
{
echo "Nums!==true";

}
echo "
";
if ($person 001===true)
{
echo "Person001===true";
}else
{
echo "Person001!==true";

}
?>

