.. _argument-unpacking-in-constant-expressions-is-not-supported:

Argument unpacking in constant expressions is not supported
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.. meta::
	:description:
		Argument unpacking in constant expressions is not supported: It is not possible to use the ``.
	:og:image: https://php-errors.readthedocs.io/en/latest/_static/logo.png
	:og:type: article
	:og:title: Argument unpacking in constant expressions is not supported
	:og:description: It is not possible to use the ``
	:og:url: https://php-errors.readthedocs.io/en/latest/messages/argument-unpacking-in-constant-expressions-is-not-supported.html
	:og:locale: en
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	:twitter:site: @exakat
	:twitter:title: Argument unpacking in constant expressions is not supported
	:twitter:description: Argument unpacking in constant expressions is not supported: It is not possible to use the ``
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Description
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It is not possible to use the ``...`` operator in an static constant expression, with the ``new`` operator. 

On the other hand, it is possible to use it inside arrays to spread the elements. It is also possible to use it in a closure definition.

Example
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.. code-block:: php

   <?php
   
   const A = [1,2,3];
   
   function foo($a = new C(...A)) {}
   
   function goo($a = [...A, ...A])) {}
   
   
   ?>

Solutions
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+ Access the array elements individually.

Changed Behavior
________________

This error may appear following an evolution in behavior, in previous versions. See ` <https://php-changed-behaviors.readthedocs.io/en/latest/behavior/.html>`_.