SerializedValueContainer.php
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SerializedValueContainer.php
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	<?php

	namespace Wikimedia\ObjectCache\Serialized;

	use stdClass;

	/**
	* Helper class for segmenting large cache values without relying
	* on serializing classes.
	*
	* @since 1.34
	* @ingroup Cache
	*/
	class SerializedValueContainer {
	private const SCHEMA = '__svc_schema__';
	// 64 bit UID
	private const SCHEMA_SEGMENTED = 'CAYCDAgCDw4';
	public const SEGMENTED_HASHES = '__hashes__';

	/**
	* @param string[] $segmentHashList Ordered list of hashes for each segment
	* @return stdClass
	*/
	public static function newSegmented( array $segmentHashList ) {
	return (object)[
	self::SCHEMA => self::SCHEMA_SEGMENTED,
	self::SEGMENTED_HASHES => $segmentHashList
	];
	}

	/**
	* @param mixed $value
	* @return bool
	*/
	public static function isSegmented( $value ): bool {
	return (
	$value instanceof stdClass &&
	( $value->{self::SCHEMA} ?? null ) === self::SCHEMA_SEGMENTED
	);
	}
	}

	/** @deprecated class alias since 1.43 */
	class_alias( SerializedValueContainer::class, 'SerializedValueContainer' );