Question

cache_users( array $user_ids )

Retrieve info for user lists to prevent multiple queries by get_userdata()

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description

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参数

$user_ids

(array) (Required) User ID numbers list

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源代码

File: wp-includes/pluggable.php

function cache_users( $user_ids ) {
	global $wpdb;

	$clean = _get_non_cached_ids( $user_ids, 'users' );

	if ( empty( $clean ) )
		return;

	$list = implode( ',', $clean );

	$users = $wpdb->get_results( "SELECT * FROM $wpdb->users WHERE ID IN ($list)" );

	$ids = array();
	foreach ( $users as $user ) {
		update_user_caches( $user );
		$ids[] = $user->ID;
	}
	update_meta_cache( 'user', $ids );
}

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更新日志

Version	description
3.0.0	Introduced.

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相关函数

Uses

• wp-includes/functions.php: _get_non_cached_ids()
• wp-includes/user.php: update_user_caches()
• wp-includes/wp-db.php: wpdb::get_results()
• wp-includes/meta.php: update_meta_cache()

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Used By

• wp-admin/includes/revision.php: wp_prepare_revisions_for_js()
• wp-includes/class-wp-user-query.php: WP_User_Query::query()

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User Contributed Notes