PHP | is_object() Function

The is_object() function is an inbuilt function in PHP which is used to check whether the given value is an object or not.

Syntax:

bool is_object( mixed $var )

Parameters: This function accepts single parameter as mentioned above and described below:

• $var: It contains the value of variable that need to be check.

Return Value: It returns TRUE if the value of variable is an object, FALSE otherwise.

Program 1:

<?php

// Create a class
class GFG {

    public $data1;
    public $data2;
    public $data3;
}

// Create an object
$obj = new GFG();

// Check the value of variable
// is an object or not
if(is_object($obj)) {
    echo "Object";
}
else {
    echo "Not Object";
}
?>

Output:

Object

Program 2:

<?php

// Create a class
class GFG {
    public $Geek_name =
          "Welcome to GeeksforGeeks";
}

// Create the class name alias
class_alias('GFG', 'GeeksforGeeks');

$obj1 = new GFG();
$obj2 = new GeeksforGeeks();
$obj3 = 'GeeksforGeeks';

var_dump(is_object($obj1));
var_dump(is_object($obj2));
var_dump(is_object($obj3));

?>

Output:

bool(true) 
bool(true) 
bool(false) 

Reference: https://www.php.net/manual/en/function.is-object.php