is_multisite

The timeline below displays how wordpress function is_multisite has changed across different WordPress versions. If a version is not listed, refer to the next available version below.

WordPress Version: 6.3

/**
 * Determines whether Multisite is enabled.
 *
 * @since 3.0.0
 *
 * @return bool True if Multisite is enabled, false otherwise.
 */
function is_multisite()
{
    if (defined('MULTISITE')) {
        return MULTISITE;
    }
    if (defined('SUBDOMAIN_INSTALL') || defined('VHOST') || defined('SUNRISE')) {
        return true;
    }
    return false;
}

WordPress Version: 4.0

/**
 * If Multisite is enabled.
 *
 * @since 3.0.0
 *
 * @return bool True if Multisite is enabled, false otherwise.
 */
function is_multisite()
{
    if (defined('MULTISITE')) {
        return MULTISITE;
    }
    if (defined('SUBDOMAIN_INSTALL') || defined('VHOST') || defined('SUNRISE')) {
        return true;
    }
    return false;
}

WordPress Version: 3.7

/**
 * Whether Multisite support is enabled
 *
 * @since 3.0.0
 *
 * @return bool True if multisite is enabled, false otherwise.
 */
function is_multisite()
{
    if (defined('MULTISITE')) {
        return MULTISITE;
    }
    if (defined('SUBDOMAIN_INSTALL') || defined('VHOST') || defined('SUNRISE')) {
        return true;
    }
    return false;
}