wpdb::check_database_version()

	public function check_database_version() {
		global $wp_version, $required_mysql_version;
		// Make sure the server has the required MySQL version
		if ( version_compare($this->db_version(), $required_mysql_version, '<') ) {
			/* translators: 1: ClassicPress version number, 2: Minimum required MySQL version number */
			return new WP_Error('database_version', sprintf( __( '<strong>ERROR</strong>: ClassicPress %1$s requires MySQL %2$s or higher' ), $wp_version, $required_mysql_version ));
		}
	}