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
/**
* Upgrade WordPress Page.
*
* @package WordPress
* @subpackage Administration
*/
/**
* We are upgrading WordPress.
*
* @since 1.5.1
* @var bool
*/
define( 'WP_INSTALLING', true );
/** Load WordPress Bootstrap */
require dirname( __DIR__ ) . '/wp-load.php';
nocache_headers();
require_once ABSPATH . 'wp-admin/includes/upgrade.php';
delete_site_transient( 'update_core' );
if ( isset( $_GET['step'] ) ) {
$step = $_GET['step'];
} else {
$step = 0;
}
// Do it. No output.
if ( 'upgrade_db' === $step ) {
wp_upgrade();
die( '0' );
}
/**
* @global string $wp_version The WordPress version string.
* @global string $required_php_version The minimum required PHP version string.
* @global string[] $required_php_extensions The names of required PHP extensions.
* @global string $required_mysql_version The minimum required MySQL version string.
* @global wpdb $wpdb WordPress database abstraction object.
*/
global $wp_version, $required_php_version, $required_php_extensions, $required_mysql_version, $wpdb;
$step = (int) $step;
$php_version = PHP_VERSION;
$mysql_version = $wpdb->db_version();
$php_compat = version_compare( $php_version, $required_php_version, '>=' );
if ( file_exists( WP_CONTENT_DIR . '/db.php' ) && empty( $wpdb->is_mysql ) ) {
$mysql_compat = true;
} else {
$mysql_compat = version_compare( $mysql_version, $required_mysql_version, '>=' );
}
$missing_extensions = array();
if ( isset( $required_php_extensions ) && is_array( $required_php_extensions ) ) {
foreach ( $required_php_extensions as $extension ) {
if ( extension_loaded( $extension ) ) {
continue;
}
$missing_extensions[] = sprintf(
/* translators: 1: URL to WordPress release notes, 2: WordPress version number, 3: The PHP extension name needed. */
__( 'You cannot upgrade because <a href="%1$s">WordPress %2$s</a> requires the %3$s PHP extension.' ),
$version_url,
$wp_version,
$extension
);
}
}
header( 'Content-Type: ' . get_option( 'html_type' ) . '; charset=' . get_option( 'blog_charset' ) );
?>
<!DOCTYPE html>
<html <?php language_attributes(); ?>>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="Content-Type" content="<?php bloginfo( 'html_type' ); ?>; charset=<?php echo get_option( 'blog_charset' ); ?>" />
<meta name="robots" content="noindex,nofollow" />
<title><?php _e( 'WordPress › Update' ); ?></title>
<?php wp_admin_css( 'install', true ); ?>
</head>
<body class="wp-core-ui">
<p id="logo"><?php _e( 'WordPress' ); ?></p>
<?php if ( (int) get_option( 'db_version' ) === $wp_db_version || ! is_blog_installed() ) : ?>
<h1><?php _e( 'No Update Required' ); ?></h1>
<p><?php _e( 'Your WordPress database is already up to date!' ); ?></p>
<p class="step"><a class="button button-large" href="<?php echo esc_url( get_option( 'home' ) ); ?>/"><?php _e( 'Continue' ); ?></a></p>
<?php
elseif ( ! $php_compat || ! $mysql_compat ) :
$version_url = sprintf(
/* translators: %s: WordPress version. */
esc_url( __( 'https://wordpress.org/documentation/wordpress-version/version-%s/' ) ),
sanitize_title( $wp_version )
);
$php_update_message = '</p><p>' . sprintf(
/* translators: %s: URL to Update PHP page. */
__( '<a href="%s">Learn more about updating PHP</a>.' ),
esc_url( wp_get_update_php_url() )
);
$annotation = wp_get_update_php_annotation();
if ( $annotation ) {
$php_update_message .= '</p><p><em>' . $annotation . '</em>';
}
if ( ! $mysql_compat && ! $php_compat ) {
$message = sprintf(
/* translators: 1: URL to WordPress release notes, 2: WordPress version number, 3: Minimum required PHP version number, 4: Minimum required MySQL version number, 5: Current PHP version number, 6: Current MySQL version number. */
__( 'You cannot update because <a href="%1$s">WordPress %2$s</a> requires PHP version %3$s or higher and MySQL version %4$s or higher. You are running PHP version %5$s and MySQL version %6$s.' ),
$version_url,
$wp_version,
$required_php_version,
$required_mysql_version,
$php_version,
$mysql_version
) . $php_update_message;
} elseif ( ! $php_compat ) {
$message = sprintf(
/* translators: 1: URL to WordPress release notes, 2: WordPress version number, 3: Minimum required PHP version number, 4: Current PHP version number. */
__( 'You cannot update because <a href="%1$s">WordPress %2$s</a> requires PHP version %3$s or higher. You are running version %4$s.' ),
$version_url,
$wp_version,
$required_php_version,
$php_version
) . $php_update_message;
} elseif ( ! $mysql_compat ) {
$message = sprintf(
/* translators: 1: URL to WordPress release notes, 2: WordPress version number, 3: Minimum required MySQL version number, 4: Current MySQL version number. */
__( 'You cannot update because <a href="%1$s">WordPress %2$s</a> requires MySQL version %3$s or higher. You are running version %4$s.' ),
$version_url,
$wp_version,
$required_mysql_version,
$mysql_version
);
}
echo '<p>' . $message . '</p>';
elseif ( count( $missing_extensions ) > 0 ) :
echo '<p>' . implode( '</p><p>', $missing_extensions ) . '</p>';
else :
switch ( $step ) :
case 0:
$goback = wp_get_referer();
if ( $goback ) {
$goback = sanitize_url( $goback );
$goback = urlencode( $goback );
}
?>
<h1><?php _e( 'Database Update Required' ); ?></h1>
<p><?php _e( 'WordPress has been updated! Next and final step is to update your database to the newest version.' ); ?></p>
<p><?php _e( 'The database update process may take a little while, so please be patient.' ); ?></p>
<p class="step"><a class="button button-large button-primary" href="upgrade.php?step=1&backto=<?php echo $goback; ?>"><?php _e( 'Update WordPress Database' ); ?></a></p>
<?php
break;
case 1:
wp_upgrade();
$backto = ! empty( $_GET['backto'] ) ? wp_unslash( urldecode( $_GET['backto'] ) ) : __get_option( 'home' ) . '/';
$backto = esc_url( $backto );
$backto = wp_validate_redirect( $backto, __get_option( 'home' ) . '/' );
?>
<h1><?php _e( 'Update Complete' ); ?></h1>
<p><?php _e( 'Your WordPress database has been successfully updated!' ); ?></p>
<p class="step"><a class="button button-large" href="<?php echo $backto; ?>"><?php _e( 'Continue' ); ?></a></p>
<?php
break;
endswitch;
endif;
?>
</body>
</html>