WordPress.org
Get WordPress
WordPress.org

WordPress Developer Resources

network_domain_check()

network_domain_check(): string|false

In this article

Back to top

Check for an existing network.

Return

string|false Base domain if network exists, otherwise false.

Source

function network_domain_check() {
	global $wpdb;

	$sql = $wpdb->prepare( 'SHOW TABLES LIKE %s', $wpdb->esc_like( $wpdb->site ) );
	if ( $wpdb->get_var( $sql ) ) {
		return $wpdb->get_var( "SELECT domain FROM $wpdb->site ORDER BY id ASC LIMIT 1" );
	}
	return false;
}

View all references View on Trac View on GitHub

UsesDescription
wpdb::esc_like()wp-includes/class-wpdb.php

First half of escaping for LIKE special characters % and _ before preparing for SQL.

wpdb::get_var()wp-includes/class-wpdb.php

Retrieves one value from the database.

wpdb::prepare()wp-includes/class-wpdb.php

Prepares a SQL query for safe execution.

Show 1 moreShow less
Used byDescription
get_clean_basedomain()wp-admin/includes/network.php

Get base domain of network.

Changelog

VersionDescription
3.0.0Introduced.

User Contributed Notes

You must log in before being able to contribute a note or feedback.