在数据库中插入/更新链接。

原型

wp_insert_link( array $linkdata, bool $wp_error = false )

参数

$linkdata (array) (Required) 构成要插入的链接的元素。

$wp_error (bool) (Optional)  是否在失败时返回WP_Error对象。

返回值

(int|WP_Error)  值0或

源文件

路径:wp-admin/includes/bookmark.php

<?php
...
function wp_insert_link( $linkdata, $wp_error = false ) {
	global $wpdb;
	$defaults = array( 'link_id' => 0, 'link_name' => '', 'link_url' => '', 'link_rating' => 0 );
	$args = wp_parse_args( $linkdata, $defaults );
	$r = wp_unslash( sanitize_bookmark( $args, 'db' ) );
	$link_id   = $r['link_id'];
	$link_name = $r['link_name'];
	$link_url  = $r['link_url'];
	$update = false;
	if ( ! empty( $link_id ) ) {
		$update = true;
	}
	if ( trim( $link_name ) == '' ) {
		if ( trim( $link_url ) != '' ) {
			$link_name = $link_url;
		} else {
			return 0;
		}
	}
	if ( trim( $link_url ) == '' ) {
		return 0;
	}
	$link_rating      = ( ! empty( $r['link_rating'] ) ) ? $r['link_rating'] : 0;
	$link_image       = ( ! empty( $r['link_image'] ) ) ? $r['link_image'] : '';
	$link_target      = ( ! empty( $r['link_target'] ) ) ? $r['link_target'] : '';
	$link_visible     = ( ! empty( $r['link_visible'] ) ) ? $r['link_visible'] : 'Y';
	$link_owner       = ( ! empty( $r['link_owner'] ) ) ? $r['link_owner'] : get_current_user_id();
	$link_notes       = ( ! empty( $r['link_notes'] ) ) ? $r['link_notes'] : '';
	$link_description = ( ! empty( $r['link_description'] ) ) ? $r['link_description'] : '';
	$link_rss         = ( ! empty( $r['link_rss'] ) ) ? $r['link_rss'] : '';
	$link_rel         = ( ! empty( $r['link_rel'] ) ) ? $r['link_rel'] : '';
	$link_category    = ( ! empty( $r['link_category'] ) ) ? $r['link_category'] : array();
	// Make sure we set a valid category.
	if ( ! is_array( $link_category ) || 0 == count( $link_category ) ) {
		$link_category = array( get_option( 'default_link_category' ) );
	}
	if ( $update ) {
		if ( false === $wpdb->update( $wpdb->links, compact( 'link_url', 'link_name', 'link_image', 'link_target', 'link_description', 'link_visible', 'link_rating', 'link_rel', 'link_notes', 'link_rss' ), compact( 'link_id' ) ) ) {
			if ( $wp_error ) {
				return new WP_Error( 'db_update_error', __( 'Could not update link in the database' ), $wpdb->last_error );
			} else {
				return 0;
			}
		}
	} else {
		if ( false === $wpdb->insert( $wpdb->links, compact( 'link_url', 'link_name', 'link_image', 'link_target', 'link_description', 'link_visible', 'link_owner', 'link_rating', 'link_rel', 'link_notes', 'link_rss' ) ) ) {
			if ( $wp_error ) {
				return new WP_Error( 'db_insert_error', __( 'Could not insert link into the database' ), $wpdb->last_error );
			} else {
				return 0;
			}
		}
		$link_id = (int) $wpdb->insert_id;
	}
	wp_set_link_cats( $link_id, $link_category );
	if ( $update ) {
		/**
		 * Fires after a link was updated in the database.
		 *
		 * @since 2.0.0
		 *
		 * @param int $link_id ID of the link that was updated.
		 */
		do_action( 'edit_link', $link_id );
	} else {
		/**
		 * Fires after a link was added to the database.
		 *
		 * @since 2.0.0
		 *
		 * @param int $link_id ID of the link that was added.
		 */
		do_action( 'add_link', $link_id );
	}
	clean_bookmark_cache( $link_id );
	return $link_id;
}
...
?>

其他

英文文档:https://developer.wordpress.org/reference/functions/wp_insert_link/