The PHP clone keyword is used to create a copy of an object.

Notes:

• If any of the properties was a reference to another variable or object, only the reference will be copied
• Objects are always passed by reference, so if the original object has another object in its properties, the copy will point to the same object (this can be changed by creating a __clone() method in the class)

<?php
class my_class {
    public $color;
    public $amount;
}

$obj = new my_class();
$obj -> color = 'blue';
$obj -> amount = 15;

$copy = clone $obj;
print_r($copy);
?>