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Source code

function ms_subdomain_constants() {

	static $error = null;

	static $error_warn = false;



	if ( false === $error )

		return;



	if ( $error ) {

		$vhost_deprecated = __( 'The constant <code>VHOST</code> <strong>is deprecated</strong>. Use the boolean constant <code>SUBDOMAIN_INSTALL</code> in wp-config.php to enable a subdomain configuration. Use is_subdomain_install() to check whether a subdomain configuration is enabled.' );

		if ( $error_warn ) {

			trigger_error( __( '<strong>Conflicting values for the constants VHOST and SUBDOMAIN_INSTALL.</strong> The value of SUBDOMAIN_INSTALL will be assumed to be your subdomain configuration setting.' ) . ' ' . $vhost_deprecated, E_USER_WARNING );

		} else {

	 		_deprecated_argument( 'define()', '3.0', $vhost_deprecated );

		}

		return;

	}



	if ( defined( 'SUBDOMAIN_INSTALL' ) && defined( 'VHOST' ) ) {

		if ( SUBDOMAIN_INSTALL == ( 'yes' == VHOST ) ) {

			$error = true;

		} else {

			$error = $error_warn = true;

		}

	} elseif ( defined( 'SUBDOMAIN_INSTALL' ) ) {

		define( 'VHOST', SUBDOMAIN_INSTALL ? 'yes' : 'no' );

	} elseif ( defined( 'VHOST' ) ) {

		$error = true;

		define( 'SUBDOMAIN_INSTALL', 'yes' == VHOST );

	} else {

		define( 'SUBDOMAIN_INSTALL', false );

		define( 'VHOST', 'no' );

	}

}