This page redirects to an external site: https://developer.wordpress.org/reference/functions/domain_exists/

Description

Check whether a blogname is already taken.

Used during the new site registration process to ensure that each blogname is unique.

Usage

<code style="color: #000000"><span style="color: #0000BB"><?php domain_exists</span><span style="color: #007700">( </span><span style="color: #0000BB">$domain</span><span style="color: #007700">, </span><span style="color: #0000BB">$path</span><span style="color: #007700">, </span><span style="color: #0000BB">$site_id </span><span style="color: #007700">); </span><span style="color: #0000BB">?></span></code>

Parameters

$domain

(string) (required) The domain to be checked.

Default: None

$path

(string) (required) The path to be checked.

Default: None

$site_id

(int) (optional) Optional. Relevant only on multi-network installs.

Default: 1

Return Values

(int) 

Filters

• 'domain_exists' called on return value:
  apply_filters( 'domain_exists', $result, $domain, $path, $site_id )

Change Log

• Since: MU
• 'domain_exists' filter added in 3.5

Source File

domain_exists() is located in wp-includes/ms-functions.php