upgrade_all()

715function upgrade_all() {716	global $wp_current_db_version, $wp_db_version;717 718	$wp_current_db_version = (int) __get_option( 'db_version' );719 720	// We are up to date. Nothing to do.721	if ( $wp_db_version === $wp_current_db_version ) {722		return;723	}724 725	// If the version is not set in the DB, try to guess the version.726	if ( empty( $wp_current_db_version ) ) {727		$wp_current_db_version = 0;728 729		// If the template option exists, we have 1.5.730		$template = __get_option( 'template' );731		if ( ! empty( $template ) ) {732			$wp_current_db_version = 2541;733		}734	}735 736	if ( $wp_current_db_version < 6039 ) {737		upgrade_230_options_table();738	}739 740	populate_options();741 742	if ( $wp_current_db_version < 2541 ) {743		upgrade_100();744		upgrade_101();745		upgrade_110();746		upgrade_130();747	}748 749	if ( $wp_current_db_version < 3308 ) {750		upgrade_160();751	}752 753	if ( $wp_current_db_version < 4772 ) {754		upgrade_210();755	}756 757	if ( $wp_current_db_version < 4351 ) {758		upgrade_old_slugs();759	}760 761	if ( $wp_current_db_version < 5539 ) {762		upgrade_230();763	}764 765	if ( $wp_current_db_version < 6124 ) {766		upgrade_230_old_tables();767	}768 769	if ( $wp_current_db_version < 7499 ) {770		upgrade_250();771	}772 773	if ( $wp_current_db_version < 7935 ) {774		upgrade_252();775	}776 777	if ( $wp_current_db_version < 8201 ) {778		upgrade_260();779	}780 781	if ( $wp_current_db_version < 8989 ) {782		upgrade_270();783	}784 785	if ( $wp_current_db_version < 10360 ) {786		upgrade_280();787	}788 789	if ( $wp_current_db_version < 11958 ) {790		upgrade_290();791	}792 793	if ( $wp_current_db_version < 15260 ) {794		upgrade_300();