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PageReferenceValue.php
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PageReferenceValue.php
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<?php
/**
* @license GPL-2.0-or-later
* @file
*/
namespace MediaWiki\Page;
use MediaWiki\DAO\WikiAwareEntityTrait;
use Stringable;
use Wikimedia\Assert\Assert;
use Wikimedia\NonSerializable\NonSerializableTrait;
/**
* Immutable value object representing a page reference.
*
* Instances of this class are expected to always represent a viewable pages, that is,
* pages that can at least potentially be visited on the wiki.
* This class may represent Special pages, but not interwiki links, section links, etc.
*
* Code that deserializes instances of PageReferenceValue must ensure that the original
* meaning of the "local" Wiki ID is preserved: When an instance of PageReferenceValue
* is created with self::LOCAL as the Wiki ID on one wiki, gets serialized,
* stored, and later read and unserialized on another wiki, the value of the Wiki ID
* must be adjusted to refer to the original wiki.
*
* @since 1.37
*/
class PageReferenceValue implements Stringable, PageReference {
/* Use JSON, but beware the note on serialization above. */
use NonSerializableTrait;
use WikiAwareEntityTrait;
/** @var int */
private $namespace;
/** @var string */
private $dbKey;
/** @var string|false */
private $wikiId;
/**
* @param int $namespace A valid namespace ID. Validation is the caller's responsibility!
* @param string $dbKey A valid DB key. Validation is the caller's responsibility!
* @param string|false $wikiId The Id of the wiki this page belongs to,
* or self::LOCAL for the local wiki. The method {@link PageReferenceValue::localReference}
* is available as a shorthand for local wikis (only requires 2 parameters).
*/
public function __construct( int $namespace, string $dbKey, $wikiId ) {
$this->assertWikiIdParam( $wikiId );
Assert::parameter( $dbKey !== '', '$dbKey', 'must not be empty' );
// Replace spaces with underscores
$dbKey = str_replace( ' ', '_', $dbKey );
$this->wikiId = $wikiId;
$this->namespace = $namespace;
$this->dbKey = $dbKey;
}
/**
* Create PageReference for a local page.
*
* @param int $namespace
* @param string $dbKey
* @return PageReferenceValue
*/
public static function localReference( int $namespace, string $dbKey ): self {
return new self( $namespace, $dbKey, self::LOCAL );
}
/**
* Get the ID of the wiki provided to the constructor.
*
* @return string|false
*/
public function getWikiId() {
return $this->wikiId;
}
/**
* @inheritDoc
*
* @return int
*/
public function getNamespace(): int {
return $this->namespace;
}
/**
* @inheritDoc
*
* @return string
*/
public function getDBkey(): string {
return $this->dbKey;
}
/**
* @inheritDoc
*/
public function isSamePageAs( PageReference $other ): bool {
// NOTE: keep in sync with Title::isSamePageAs()!
// NOTE: keep in sync with WikiPage::isSamePageAs()!
return $this->getWikiId() === $other->getWikiId()
&& $this->getNamespace() === $other->getNamespace()
&& $this->getDBkey() === $other->getDBkey();
}
/**
* Returns a string representation of the title, for logging. This is purely informative
* and must not be used programmatically.
*/
public function __toString(): string {
$s = '[' . $this->namespace . ':' . $this->dbKey . ']';
if ( $this->wikiId ) {
$s .= '@' . $this->wikiId;
}
return $s;
}
}

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text/x-php
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Aug 19 2026, 17:09 (4 w, 5 d ago)
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22/ea/bc366aa40eca0d20c5b1064fbd1f
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PageReferenceValue.php (3 KB)

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