get_id_from_blogname

Retrieves a sites ID given its (subdomain or directory) slug.

Description

(int|null) get_id_from_blogname( (string) $slug ); 

Returns (int|null)

The site ID, or null if no site is found for the given slug.

Parameters (1)

0. $slug (string)
A site's slug.

Usage

  1. if ( !function_exists( 'get_id_from_blogname' ) ) { 
  2.     require_once ABSPATH . WPINC . '/ms-blogs.php'; 
  3. } 
  4.   
  5. // A site's slug. 
  6. $slug = ''; 
  7.   
  8. // NOTICE! Understand what this does before running. 
  9. $result = get_id_from_blogname($slug); 
  10.     

Defined (1)

The function is defined in the following location(s).

/wp-includes/ms-blogs.php  
  1. function get_id_from_blogname( $slug ) { 
  2.     $current_network = get_network(); 
  3.     $slug = trim( $slug, '/' ); 
  4.  
  5.     if ( is_subdomain_install() ) { 
  6.         $domain = $slug . '.' . preg_replace( '|^www\.|', '', $current_network->domain ); 
  7.         $path = $current_network->path; 
  8.     } else { 
  9.         $domain = $current_network->domain; 
  10.         $path = $current_network->path . $slug . '/'; 
  11.     } 
  12.  
  13.     $site_ids = get_sites( array( 
  14.         'number' => 1,  
  15.         'fields' => 'ids',  
  16.         'domain' => $domain,  
  17.         'path' => $path,  
  18.  ) ); 
  19.  
  20.     if ( empty( $site_ids ) ) { 
  21.         return null; 
  22.     } 
  23.  
  24.     return array_shift( $site_ids ); 
  25. }