In PHP, how do I deep copy objects in vanilla PHP?

In vanilla PHP, to deep copy objects, you can use the serialization and unserialization technique. This method creates a duplicate of the object, including its nested objects, enabling you to maintain the integrity of the original object without any references.


            <?php
            class Address {
                public $street;
                public $city;

                public function __construct($street, $city) {
                    $this->street = $street;
                    $this->city = $city;
                }
            }

            class User {
                public $name;
                public $address;

                public function __construct($name, Address $address) {
                    $this->name = $name;
                    $this->address = $address;
                }
            }

            // Original object
            $originalAddress = new Address("123 Main St", "Anytown");
            $originalUser = new User("John Doe", $originalAddress);

            // Deep copy
            $deepCopiedUser = unserialize(serialize($originalUser));

            // Modifying the copied object
            $deepCopiedUser->address->street = "456 Another St";

            // Original object remains unchanged
            echo $originalUser->address->street; // Outputs: "123 Main St"
            echo $deepCopiedUser->address->street; // Outputs: "456 Another St"
            ?>

In PHP, how do I deep copy objects in vanilla PHP?

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In PHP, how do I deep copy objects in vanilla PHP?

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