is_multisite() WP 1.0
If Multisite is enabled.
Basis of: is_main_site()
1 time — 0.000009 sec (speed of light) | 50000 times — 0.01 sec (speed of light) | PHP 7.0.8, WP 4.6.1
No Hooks.
Return
true|false. True if Multisite is enabled, false otherwise.
Usage
is_multisite();
Changelog
| Since 3.0.0 | Introduced. |
Code of is_multisite() is multisite WP 5.7.1
function is_multisite() {
if ( defined( 'MULTISITE' ) ) {
return MULTISITE;
}
if ( defined( 'SUBDOMAIN_INSTALL' ) || defined( 'VHOST' ) || defined( 'SUNRISE' ) ) {
return true;
}
return false;
}