/*
Theme Name: Ekko Child
Template: ekko
Theme URI: http://www.ekko-wp.com
Author: Key-Design
Author URI: http://themeforest.net/user/Key-Design
Description: Flexible Multi-Purpose Responsive WordPress Theme
Version: 1.0
Tags: one-column, two-columns, three-columns, four-columns, left-sidebar, right-sidebar, custom-menu, featured-images, flexible-header, post-formats, sticky-post, translation-ready

/* Below you can write your style */

add_action('add_attachment', function($post_id) {
    $alt = get_post_meta($post_id, '_wp_attachment_image_alt', true);
    if ($alt) {
        wp_update_post(['ID' => $post_id, 'post_title' => $alt, 'post_excerpt' => '']);
    }
});