执行WordPress 4.4.0中所做的更改。

原型

upgrade_440()

源文件

路径:wp-admin/includes/upgrade.php

<?php
...
 * Execute changes made in WordPress 4.2.0.
 *
 * @ignore
 * @since 4.2.0
 *
 * @global int   $wp_current_db_version
 * @global wpdb  $wpdb
 */
function upgrade_420() {}
/**
 * Executes changes made in WordPress 4.3.0.
 *
 * @ignore
 * @since 4.3.0
...
?>

其他

英文文档:https://developer.wordpress.org/reference/functions/upgrade_440/