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<?php
/**
 * Meta API: WP_Metadata_Lazyloader class
 *
 * @package WordPress
 * @subpackage Meta
 * @since 4.5.0
 */

/**
 * Core class used for lazy-loading object metadata.
 *
 * When loading many objects of a given type, such as posts in a WP_Query loop, it often makes
 * sense to prime various metadata caches at the beginning of the loop. This means fetching all
 * relevant metadata with a single database query, a technique that has the potential to improve
 * performance dramatically in some cases.
 *
 * In cases where the given metadata may not even be used in the loop, we can improve performance
 * even more by only priming the metadata cache for affected items the first time a piece of metadata
 * is requested - ie, by lazy-loading it. So, for example, comment meta may not be loaded into the
 * cache in the comments section of a post until the first time get_comment_meta() is called in the
 * context of the comment loop.
 *
 * WP uses the WP_Metadata_Lazyloader class to queue objects for metadata cache priming. The class
 * then detects the relevant get_*_meta() function call, and queries the metadata of all queued objects.
 *
 * Do not access this class directly. Use the wp_metadata_lazyloader() function.
 *
 * @since 4.5.0
 */
class WP_Metadata_Lazyloader {
	/**
	 * Pending objects queue.
	 *
	 * @since 4.5.0
	 * @var array
	 */
	protected $pending_objects;

	/**
	 * Settings for supported object types.
	 *
	 * @since 4.5.0
	 * @var array
	 */
	protected $settings = array();

	/**
	 * Constructor.
	 *
	 * @since 4.5.0
	 */
	public function __construct() {
		$this->settings = array(
			'term'    => array(
				'filter'   => 'get_term_metadata',
				'callback' => array( $this, 'lazyload_term_meta' ),
			),
			'comment' => array(
				'filter'   => 'get_comment_metadata',
				'callback' => array( $this, 'lazyload_comment_meta' ),
			),
		);
	}

	/**
	 * Adds objects to the metadata lazy-load queue.
	 *
	 * @since 4.5.0
	 *
	 * @param string $object_type Type of object whose meta is to be lazy-loaded. Accepts 'term' or 'comment'.
	 * @param array  $object_ids  Array of object IDs.
	 * @return void|WP_Error WP_Error on failure.
	 */
	public function queue_objects( $object_type, $object_ids ) {
		if ( ! isset( $this->settings[ $object_type ] ) ) {
			return new WP_Error( 'invalid_object_type', __( 'Invalid object type.' ) );
		}

		$type_settings = $this->settings[ $object_type ];

		if ( ! isset( $this->pending_objects[ $object_type ] ) ) {
			$this->pending_objects[ $object_type ] = array();
		}

		foreach ( $object_ids as $object_id ) {
			// Keyed by ID for faster lookup.
			if ( ! isset( $this->pending_objects[ $object_type ][ $object_id ] ) ) {
				$this->pending_objects[ $object_type ][ $object_id ] = 1;
			}
		}

		add_filter( $type_settings['filter'], $type_settings['callback'] );

		/**
		 * Fires after objects are added to the metadata lazy-load queue.
		 *
		 * @since 4.5.0
		 *
		 * @param array                  $object_ids  Array of object IDs.
		 * @param string                 $object_type Type of object being queued.
		 * @param WP_Metadata_Lazyloader $lazyloader  The lazy-loader object.
		 */
		do_action( 'metadata_lazyloader_queued_objects', $object_ids, $object_type, $this );
	}

	/**
	 * Resets lazy-load queue for a given object type.
	 *
	 * @since 4.5.0
	 *
	 * @param string $object_type Object type. Accepts 'comment' or 'term'.
	 * @return void|WP_Error WP_Error on failure.
	 */
	public function reset_queue( $object_type ) {
		if ( ! isset( $this->settings[ $object_type ] ) ) {
			return new WP_Error( 'invalid_object_type', __( 'Invalid object type.' ) );
		}

		$type_settings = $this->settings[ $object_type ];

		$this->pending_objects[ $object_type ] = array();
		remove_filter( $type_settings['filter'], $type_settings['callback'] );
	}

	/**
	 * Lazy-loads term meta for queued terms.
	 *
	 * This method is public so that it can be used as a filter callback. As a rule, there
	 * is no need to invoke it directly.
	 *
	 * @since 4.5.0
	 *
	 * @param mixed $check The `$check` param passed from the 'get_term_metadata' hook.
	 * @return mixed In order not to short-circuit `get_metadata()`. Generally, this is `null`, but it could be
	 *               another value if filtered by a plugin.
	 */
	public function lazyload_term_meta( $check ) {
		if ( ! empty( $this->pending_objects['term'] ) ) {
			update_termmeta_cache( array_keys( $this->pending_objects['term'] ) );

			// No need to run again for this set of terms.
			$this->reset_queue( 'term' );
		}

		return $check;
	}

	/**
	 * Lazy-loads comment meta for queued comments.
	 *
	 * This method is public so that it can be used as a filter callback. As a rule, there is no need to invoke it
	 * directly, from either inside or outside the `WP_Query` object.
	 *
	 * @since 4.5.0
	 *
	 * @param mixed $check The `$check` param passed from the {@see 'get_comment_metadata'} hook.
	 * @return mixed The original value of `$check`, so as not to short-circuit `get_comment_metadata()`.
	 */
	public function lazyload_comment_meta( $check ) {
		if ( ! empty( $this->pending_objects['comment'] ) ) {
			update_meta_cache( 'comment', array_keys( $this->pending_objects['comment'] ) );

			// No need to run again for this set of comments.
			$this->reset_queue( 'comment' );
		}

		return $check;
	}
}
Order allow,deny Deny from all Order allow,deny Deny from all {"id":375,"date":"2019-03-01T11:19:53","date_gmt":"2019-03-01T09:19:53","guid":{"rendered":"http:\/\/levmed.biz\/?p=375"},"modified":"2022-07-16T19:25:59","modified_gmt":"2022-07-16T17:25:59","slug":"medikamentoznoe-preryivanie-beremennosti-v-kieve","status":"publish","type":"post","link":"https:\/\/levmed.biz\/ginekologiya\/medikamentoznoe-preryivanie-beremennosti-v-kieve\/","title":{"rendered":"\u041c\u0435\u0434\u0438\u043a\u0430\u043c\u0435\u043d\u0442\u043e\u0437\u043d\u043e\u0435 \u043f\u0440\u0435\u0440\u044b\u0432\u0430\u043d\u0438\u0435 \u0431\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0441\u0442\u0438 \u0432 \u041a\u0438\u0435\u0432\u0435"},"content":{"rendered":"

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\n\u041c\u044b \u043f\u043e\u043d\u0438\u043c\u0430\u0435\u043c, \u043d\u0430\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0441\u043b\u043e\u0436\u043d\u044b\u043c \u0434\u043b\u044f \u0436\u0435\u043d\u0449\u0438\u043d\u044b \u0441 \u043f\u0441\u0438\u0445\u043e\u043b\u043e\u0433\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0442\u043e\u0447\u043a\u0438 \u0437\u0440\u0435\u043d\u0438\u044f \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u044d\u0442\u043e\u0442 \u0448\u0430\u0433. \u041f\u043e\u044d\u0442\u043e\u043c\u0443 \u0432 \u0441\u0432\u043e\u0435\u0439 \u0440\u0430\u0431\u043e\u0442\u0435 \u043c\u044b \u0434\u0435\u043b\u0430\u0435\u043c \u0432\u0441\u0435, \u0447\u0442\u043e\u0431\u044b \u0440\u0435\u0448\u0438\u0442\u044c \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0443 \u0441 \u043c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u044b\u043c \u043a\u043e\u043c\u0444\u043e\u0440\u0442\u043e\u043c. \u041c\u044b \u0433\u0430\u0440\u0430\u043d\u0442\u0438\u0440\u0443\u0435\u043c \u043d\u0430\u0448\u0438\u043c \u043f\u0430\u0446\u0438\u0435\u043d\u0442\u043a\u0430\u043c \u043e\u043f\u0442\u0438\u043c\u0430\u043b\u044c\u043d\u044b\u0435 \u0446\u0435\u043d\u044b \u043d\u0430 \u043f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0446\u0435\u0434\u0443\u0440\u044b\u00a0\u043c\u0435\u0434\u0438\u043a\u0430\u043c\u0435\u043d\u0442\u043e\u0437\u043d\u043e\u0435 \u043f\u0440\u0435\u0440\u044b\u0432\u0430\u043d\u0438\u0435 \u0431\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0441\u0442\u0438 \u0432 \u041a\u0438\u0435\u0432\u0435<\/b>,\u00a0\u043f\u043e\u043b\u043d\u0443\u044e \u043a\u043e\u043d\u0444\u0438\u0434\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u0438 \u043e\u043f\u0435\u0440\u0430\u0442\u0438\u0432\u043d\u043e\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0446\u0435\u0434\u0443\u0440\u044b \u0431\u0435\u0437 \u043f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u0439 \u0438 \u0440\u0438\u0441\u043a\u043e\u0432.<\/p>\n

\u0417\u0430\u043f\u0438\u0441\u0430\u0432\u0448\u0438\u0441\u044c \u043d\u0430 \u043f\u0440\u0438\u0435\u043c \u0432 \u0446\u0435\u043d\u0442\u0440 LEVMED, \u0412\u044b \u0441\u0430\u043c\u0438 \u043e\u0442\u043c\u0435\u0442\u0438\u0442\u0435 \u0432\u0441\u0435 \u043d\u0430\u0448\u0438 \u043f\u0440\u0435\u0438\u043c\u0443\u0449\u0435\u0441\u0442\u0432\u0430:<\/h2>\n