WordPress Version: 6.1
/**
* Defines Multisite subdomain constants and handles warnings and notices.
*
* VHOST is deprecated in favor of SUBDOMAIN_INSTALL, which is a bool.
*
* On first call, the constants are checked and defined. On second call,
* we will have translations loaded and can trigger warnings easily.
*
* @since 3.0.0
*/
function ms_subdomain_constants()
{
static $subdomain_error = null;
static $subdomain_error_warn = null;
if (false === $subdomain_error) {
return;
}
if ($subdomain_error) {
$vhost_deprecated = sprintf(
/* translators: 1: VHOST, 2: SUBDOMAIN_INSTALL, 3: wp-config.php, 4: is_subdomain_install() */
__('The constant %1$s <strong>is deprecated</strong>. Use the boolean constant %2$s in %3$s to enable a subdomain configuration. Use %4$s to check whether a subdomain configuration is enabled.'),
'<code>VHOST</code>',
'<code>SUBDOMAIN_INSTALL</code>',
'<code>wp-config.php</code>',
'<code>is_subdomain_install()</code>'
);
if ($subdomain_error_warn) {
trigger_error(sprintf(
/* translators: 1: VHOST, 2: SUBDOMAIN_INSTALL */
__('<strong>Conflicting values for the constants %1$s and %2$s.</strong> The value of %2$s will be assumed to be your subdomain configuration setting.'),
'<code>VHOST</code>',
'<code>SUBDOMAIN_INSTALL</code>'
) . ' ' . $vhost_deprecated, E_USER_WARNING);
} else {
_deprecated_argument('define()', '3.0.0', $vhost_deprecated);
}
return;
}
if (defined('SUBDOMAIN_INSTALL') && defined('VHOST')) {
$subdomain_error = true;
if (SUBDOMAIN_INSTALL !== ('yes' === VHOST)) {
$subdomain_error_warn = true;
}
} elseif (defined('SUBDOMAIN_INSTALL')) {
$subdomain_error = false;
define('VHOST', SUBDOMAIN_INSTALL ? 'yes' : 'no');
} elseif (defined('VHOST')) {
$subdomain_error = true;
define('SUBDOMAIN_INSTALL', 'yes' === VHOST);
} else {
$subdomain_error = false;
define('SUBDOMAIN_INSTALL', false);
define('VHOST', 'no');
}
}