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<?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( dirname( __FILE__ ) ) . '/wp-load.php' ); nocache_headers(); timer_start(); 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 * @global string $required_php_version * @global string $required_mysql_version * @global wpdb $wpdb */ global $wp_version, $required_php_version, $required_mysql_version; $step = (int) $step; $php_version = phpversion(); $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, '>=' ); @header( 'Content-Type: ' . get_option( 'html_type' ) . '; charset=' . get_option( 'blog_charset' ) ); ?> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml" <?php language_attributes(); ?>> <head> <meta name="viewport" content="width=device-width" /> <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 ); wp_admin_css( 'ie', true ); ?> </head> <body class="wp-core-ui"> <p id="logo"><a href="<?php echo esc_url( __( 'https://wordpress.org/' ) ); ?>" tabindex="-1"><?php _e( 'WordPress' ); ?></a></p> <?php if ( get_option( 'db_version' ) == $wp_db_version || !is_blog_installed() ) : ?> <h1><?php _e( 'No Update Required' ); ?></h1> <p><?php _e( 'Your WordPress database is already up-to-date!' ); ?></p> <p class="step"><a class="button button-large" href="<?php echo get_option( 'home' ); ?>/"><?php _e( 'Continue' ); ?></a></p> <?php elseif ( !$php_compat || !$mysql_compat ) : if ( !$mysql_compat && !$php_compat ) printf( __('You cannot update because <a href="https://codex.wordpress.org/Version_%1$s">WordPress %1$s</a> requires PHP version %2$s or higher and MySQL version %3$s or higher. You are running PHP version %4$s and MySQL version %5$s.'), $wp_version, $required_php_version, $required_mysql_version, $php_version, $mysql_version ); elseif ( !$php_compat ) printf( __('You cannot update because <a href="https://codex.wordpress.org/Version_%1$s">WordPress %1$s</a> requires PHP version %2$s or higher. You are running version %3$s.'), $wp_version, $required_php_version, $php_version ); elseif ( !$mysql_compat ) printf( __('You cannot update because <a href="https://codex.wordpress.org/Version_%1$s">WordPress %1$s</a> requires MySQL version %2$s or higher. You are running version %3$s.'), $wp_version, $required_mysql_version, $mysql_version ); ?> <?php else : switch ( $step ) : case 0: $goback = wp_get_referer(); if ( $goback ) { $goback = esc_url_raw( $goback ); $goback = urlencode( $goback ); } ?> <h1><?php _e( 'Database Update Required' ); ?></h1> <p><?php _e( 'WordPress has been updated! Before we send you on your way, we have to update your database to the newest version.' ); ?></p>
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- __get_option() – Utility version of get_option that is private to install/upgrade.
- bloginfo() – Displays information about the current site.
- delete_site_transient() – Delete a site transient.
- esc_url_raw() – Performs esc_url() for database usage.
- esc_url() – Checks and cleans a URL.
- get_option() – Retrieves an option value based on an option name.
- is_blog_installed() – Test whether WordPress is already installed.
- language_attributes() – Displays the language attributes for the html tag.
- nocache_headers() – Set the headers to prevent caching for the different browsers.
- timer_start() – Start the WordPress micro-timer.
- timer_stop() – Retrieve or display the time from the page start to when function is called.
- wp_admin_css() – Enqueues or directly prints a stylesheet link to the specified CSS file.
- wp_get_referer() – Retrieve referer from ‘_wp_http_referer’ or HTTP referer.
- wp_unslash() – Remove slashes from a string or array of strings.
- wp_upgrade() – Runs WordPress Upgrade functions.
- wp_validate_redirect() – Validates a URL for use in a redirect.