get_blog_id_from_url()

最后更新于：2021-11-26 06:17:27

get_blog_id_from_url( string$domain, string$path=’/’)

Get a blog’s numeric ID from its URL.

参数

$domain

(string) (Required)

$path

(string) (Optional) Not required for subdomain installations.

Default value: ‘/’

响应

(int) 0 if no blog found, otherwise the ID of the matching blog

源文件

文件: gc-includes/ms-functions.php

function get_blog_id_from_url( $domain, $path = '/' ) {
	$domain = strtolower( $domain );
	$path   = strtolower( $path );
	$id     = gc_cache_get( md5( $domain . $path ), 'blog-id-cache' );

	if ( -1 == $id ) { // Blog does not exist.
		return 0;
	} elseif ( $id ) {
		return (int) $id;
	}

	$args   = array(
		'domain'                 => $domain,
		'path'                   => $path,
		'fields'                 => 'ids',
		'number'                 => 1,
		'update_site_meta_cache' => false,
	);
	$result = get_sites( $args );
	$id     = array_shift( $result );

	if ( ! $id ) {
		gc_cache_set( md5( $domain . $path ), -1, 'blog-id-cache' );
		return 0;
	}

	gc_cache_set( md5( $domain . $path ), $id, 'blog-id-cache' );

	return $id;
}