函数原型
get_blog_id_from_url( string $domain, string $path = ‘/’ ): int
函数描述
Gets a blog’s numeric ID from its URL.
是否弃用
未弃用
函数参数
-
$domain
string
Required -
$path
string
Optional - Not required for subdomain installations.
Default:
'/'
函数返回值
int 0 if no blog found, otherwise the ID of the matching blog
函数位置
File: wp-includes/ms-functions.php.
函数源码
function get_blog_id_from_url( $domain, $path = '/' ) {
$domain = strtolower( $domain );
$path = strtolower( $path );
$id = wp_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 ) {
wp_cache_set( md5( $domain . $path ), -1, 'blog-id-cache' );
return 0;
}
wp_cache_set( md5( $domain . $path ), $id, 'blog-id-cache' );
return $id;
}
源码链接
变更日志
| Version | Description |
|---|---|
| MU (3.0.0) | Introduced. |

