
如何在WordPress文章和页面上显示最近更新日期
wp_is_maintenance_mode ( No parameters )
Check if maintenance mode is enabled.
Checks for a file in the WordPress root directory named “.maintenance”.
This file will contain the variable $upgrading, set to the time the file
was created. If the file was created less than 10 minutes ago, WordPress
is in maintenance mode.
function wp_is_maintenance_mode() { global $upgrading; if ( ! file_exists( ABSPATH . '.maintenance' ) || wp_installing() ) { return false; } require ABSPATH . '.maintenance'; // If the $upgrading timestamp is older than 10 minutes, consider maintenance over. if ( ( time() - $upgrading ) >= 10 * MINUTE_IN_SECONDS ) { return false; } /** * Filters whether to enable maintenance mode. * * This filter runs before it can be used by plugins. It is designed for * non-web runtimes. If this filter returns true, maintenance mode will be * active and the request will end. If false, the request will be allowed to * continue processing even if maintenance mode should be active. * * @since 4.6.0 * * @param bool $enable_checks Whether to enable maintenance mode. Default true. * @param int $upgrading The timestamp set in the .maintenance file. */ if ( ! apply_filters( 'enable_maintenance_mode', true, $upgrading ) ) { return false; } return true; }