As the sun rises and the forest mist clears, and the clouds return and the caves darken, these changes of light and shadow are the morning and evening in the mountains. Wildflowers bloom with their subtle fragrance, fine trees flourish with their dense shade, the wind and frost are pure and clean, and the water recedes to reveal the rocks—these are the four seasons in the mountains. Going out in the morning and returning in the evening, the scenery of the four seasons is different, and the joy is endless.至于负者歌于途,行者休于树,前者呼,后者应,伛偻提携,往来而不绝者,滁人游也。临溪而渔,溪深而鱼肥,酿泉为酒,泉香而酒洌,山肴野蔌,杂然而前陈者,太守宴也。宴酣之乐,非丝非竹,射者中,弈者胜,觥筹交错,起坐而喧哗者,众宾欢也。苍颜白发,颓然乎其间者,太守醉也。
<?php
/**
* Multisite upgrade administration panel.
*
* @package WordPress
* @subpackage Multisite
* @since 3.0.0
*/
/** Load WordPress Administration Bootstrap */
require_once __DIR__ . '/admin.php';
require_once ABSPATH . WPINC . '/http.php';
/**
* @global int $wp_db_version WordPress database version.
*/
global $wp_db_version;
// Used in the HTML title tag.
$title = __( 'Upgrade Network' );
$parent_file = 'upgrade.php';
get_current_screen()->add_help_tab(
array(
'id' => 'overview',
'title' => __( 'Overview' ),
'content' =>
'<p>' . __( 'Only use this screen once you have updated to a new version of WordPress through Updates/Available Updates (via the Network Administration navigation menu or the Toolbar). Clicking the Upgrade Network button will step through each site in the network, five at a time, and make sure any database updates are applied.' ) . '</p>' .
'<p>' . __( 'If a version update to core has not happened, clicking this button will not affect anything.' ) . '</p>' .
'<p>' . __( 'If this process fails for any reason, users logging in to their sites will force the same update.' ) . '</p>',
)
);
get_current_screen()->set_help_sidebar(
'<p><strong>' . __( 'For more information:' ) . '</strong></p>' .
'<p>' . __( '<a href="https://developer.wordpress.org/advanced-administration/multisite/admin/#network-admin-updates-screen">Documentation on Upgrade Network</a>' ) . '</p>' .
'<p>' . __( '<a href="https://wordpress.org/support/forums/">Support forums</a>' ) . '</p>'
);
require_once ABSPATH . 'wp-admin/admin-header.php';
if ( ! current_user_can( 'upgrade_network' ) ) {
wp_die( __( 'Sorry, you are not allowed to access this page.' ), 403 );
}
echo '<div class="wrap">';
echo '<h1>' . __( 'Upgrade Network' ) . '</h1>';
$action = isset( $_GET['action'] ) ? $_GET['action'] : 'show';
switch ( $action ) {
case 'upgrade':
$n = ( isset( $_GET['n'] ) ) ? (int) $_GET['n'] : 0;
if ( $n < 5 ) {
update_site_option( 'wpmu_upgrade_site', $wp_db_version );
}
$site_ids = get_sites(
array(
'spam' => 0,
'deleted' => 0,
'archived' => 0,
'network_id' => get_current_network_id(),
'number' => 5,
'offset' => $n,
'fields' => 'ids',
'order' => 'DESC',
'orderby' => 'id',
'update_site_meta_cache' => false,
)
);
if ( empty( $site_ids ) ) {
echo '<p>' . __( 'All done!' ) . '</p>';
break;
}
echo '<ul>';
foreach ( (array) $site_ids as $site_id ) {
switch_to_blog( $site_id );
$siteurl = site_url();
$upgrade_url = admin_url( 'upgrade.php?step=upgrade_db' );
restore_current_blog();
echo "<li>$siteurl</li>";
$response = wp_remote_get(
$upgrade_url,
array(
'timeout' => 120,
'httpversion' => '1.1',
'sslverify' => false,
)
);
if ( is_wp_error( $response ) ) {
wp_die(
sprintf(
/* translators: 1: Site URL, 2: Server error message. */
__( 'Warning! Problem updating %1$s. Your server may not be able to connect to sites running on it. Error message: %2$s' ),
$siteurl,
'<em>' . $response->get_error_message() . '</em>'
)
);
}
/**
* Fires after the Multisite DB upgrade for each site is complete.
*
* @since MU (3.0.0)
*
* @param array $response The upgrade response array.
*/
do_action( 'after_mu_upgrade', $response );
/**
* Fires after each site has been upgraded.
*
* @since MU (3.0.0)
*
* @param int $site_id The Site ID.
*/
do_action( 'wpmu_upgrade_site', $site_id );
}
echo '</ul>';
?><p><?php _e( 'If your browser does not start loading the next page automatically, click this link:' ); ?> <a class="button" href="upgrade.php?action=upgrade&n=<?php echo ( $n + 5 ); ?>"><?php _e( 'Next Sites' ); ?></a></p>
<script type="text/javascript">
<!--
function nextpage() {
location.href = "upgrade.php?action=upgrade&n=<?php echo ( $n + 5 ); ?>";
}
setTimeout( "nextpage()", 250 );
//-->
</script>
<?php
break;
case 'show':
default:
if ( (int) get_site_option( 'wpmu_upgrade_site' ) !== $wp_db_version ) :
?>
<h2><?php _e( 'Database Update Required' ); ?></h2>
<p><?php _e( 'WordPress has been updated! Next and final step is to individually upgrade the sites in your network.' ); ?></p>
<?php endif; ?>
<p><?php _e( 'The database update process may take a little while, so please be patient.' ); ?></p>
<p><a class="button button-primary" href="upgrade.php?action=upgrade"><?php _e( 'Upgrade Network' ); ?></a></p>
<?php
/**
* Fires before the footer on the network upgrade screen.
*
* @since MU (3.0.0)
*/
do_action( 'wpmu_upgrade_page' );
break;
}
?>
</div>
<?php require_once ABSPATH . 'wp-admin/admin-footer.php'; ?>