What happens when an object is passed by reference in PHP?

When an object is passed by reference in PHP, any changes made to the object within the function will affect the original object outside of the function as well. To pass an object by reference in PHP, you can use the "&" symbol before the parameter in the function declaration. 

class MyClass {
    public $value;

    public function __construct($value) {
        $this->value = $value;
    }
}

function modifyObject(MyClass &$obj) {
    $obj->value = "Modified";
}

$obj = new MyClass("Original");
echo $obj->value; // Output: Original

modifyObject($obj);
echo $obj->value; // Output: Modified

Keywords

object passed by reference PHP reference memory allocation

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