ConstantDependency.php
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ConstantDependency.php
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	<?php
	/**
	* @license GPL-2.0-or-later
	* @file
	*/

	/**
	* Depend on a PHP constant.
	*
	* @ingroup Language
	*/
	class ConstantDependency extends CacheDependency {
	/** @var string */
	private $name;
	/** @var mixed */
	private $value;

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

	/**
	* @return bool
	*/
	public function isExpired() {
	return constant( $this->name ) != $this->value;
	}
	}