Interview question

What is the difference between a class and an object in PHP? PHP में class और object में क्या अंतर है?

Answer

A class is a blueprint or template that defines properties and methods. An object is a concrete instance created from that blueprint, with its own actual values in memory.

class Car {
    public string $color;
    public function drive() { return $this->color . ' car is driving'; }
}

$car1 = new Car();
$car1->color = 'Red';

$car2 = new Car();
$car2->color = 'Blue';

Aspect	Class	Object
Nature	Blueprint/template, no memory allocated for data	Actual instance with allocated memory
Count	One class definition	Many objects can be created from one class
Keyword	class	new

Interview tip: Use the analogy: class is the architectural blueprint of a house, an object is an actual house built from it - many houses (objects), one blueprint (class).

Class एक blueprint या template है जो properties और methods डिफाइन करता है। Object उस blueprint से बना असली instance है, जिसकी अपनी वैल्यूज़ memory में होती हैं।

class Car {
    public string $color;
    public function drive() { return $this->color . ' car is driving'; }
}

$car1 = new Car();
$car1->color = 'Red';

$car2 = new Car();
$car2->color = 'Blue';

पहलू	Class	Object
प्रकृति	Blueprint/template, डेटा के लिए memory allocate नहीं होती	असली instance, memory allocated
संख्या	एक class definition	एक class से कई objects बन सकते हैं
कीवर्ड	class	new

इंटरव्यू टिप: यह analogy इस्तेमाल करें: class घर का architectural blueprint है, object उससे बना असली घर - कई घर (objects), एक blueprint (class)।

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