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Description
Get a blog's numeric ID from its URL.
On a subdirectory installation like example.com/blog1/, $domain will be the root 'example.com' and $path the subdirectory '/blog1/'. With subdomains like blog1.example.com, $domain is 'blog1.example.com' and $path is '/'.
Usage
$int = get_blog_id_from_url( $domain, $path );
Parameters
- $domain
- ( string ) required –
- $path
- ( string ) optional default: / – Optional. Not required for subdomain installations.
Returns
int
- if no blog found, otherwise the ID of the matching blog
Source
File name: wordpress/wp-includes/ms-functions.php
Lines:
1 to 30 of 30
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; }