How can instances of a class that was not self-instantiated be recognized in PHP?

Instances of a class that was not self-instantiated can be recognized in PHP by checking if the object is an instance of the class using the `instanceof` keyword. This allows you to determine if the object was created using the `new` keyword or if it was obtained through some other means. 

class MyClass {
    public function __construct() {
        // Constructor
    }
}

$object = new MyClass();

// Check if $object is an instance of MyClass
if ($object instanceof MyClass) {
    echo 'Instance of MyClass';
} else {
    echo 'Not an instance of MyClass';
}

Keywords

class self-instantiated instances PHP recognition

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