Question

update_post_thumbnail_cache( WP_Query $wp_query = null )

Update cache for thumbnails in the current loop.

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description

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参数

$wp_query

(WP_Query) (Optional) A WP_Query instance. Defaults to the $wp_query global.

Default value: null

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源代码

File: wp-includes/post-thumbnail-template.php

function update_post_thumbnail_cache( $wp_query = null ) {
	if ( ! $wp_query )
		$wp_query = $GLOBALS['wp_query'];

	if ( $wp_query->thumbnails_cached )
		return;

	$thumb_ids = array();
	foreach ( $wp_query->posts as $post ) {
		if ( $id = get_post_thumbnail_id( $post->ID ) )
			$thumb_ids[] = $id;
	}

	if ( ! empty ( $thumb_ids ) ) {
		_prime_post_caches( $thumb_ids, false, true );
	}

	$wp_query->thumbnails_cached = true;
}

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更新日志

Version	description
3.2.0	Introduced.

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相关函数

Uses

• wp-includes/post-thumbnail-template.php: get_post_thumbnail_id()
• wp-includes/post.php: _prime_post_caches()

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Used By

• wp-includes/post-thumbnail-template.php: get_the_post_thumbnail()

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User Contributed Notes