Nâng cấp Silent Update

silent-update.php

<?php
/**
 * SilentUpdate WordPress Plugin
 *
 * @package   SilentUpdate
 * @author    Tomasz Dobrzyński
 * @link      http://tomasz-dobrzynski.com
 * @copyright Copyright © 2015 Tomasz Dobrzyński
 *
 * Plugin Name: Silent Update
 * Plugin URI: http://tomasz-dobrzynski.com/wordpress-silent-update
 * Description: Control whether you want to update modification date when updating a post.
 * Version: 1.0.0
 * Author: Tomasz Dobrzyński
 * Author URI: http://tomasz-dobrzynski.com
 * Domain Path: /languages/
 * Tested up to: 4.2.2
 */
function silent_update_call() {
    new SilentUpdate();
}
/**
 * Only load when editing posts in the admin area
 */
if ( is_admin() ) {
    add_action( 'load-post.php', 'silent_update_call' );
    add_action( 'load-post-new.php', 'silent_update_call' );
}
class SilentUpdate {
    function __construct() {
        load_plugin_textdomain( 'silent-update', false, basename( dirname( __FILE__ ) ) . '/languages' );
        // Add to the Publish meta box
        add_action( 'post_submitbox_misc_actions', array( $this, 'render_meta_box_content' ), 99 );
        add_filter( 'wp_insert_post_data', array( $this, 'filter_handler' ), 99, 2 );
    }
    /**
     * Add content to the Publish meta box.
     */
    public function render_meta_box_content() {
        global $post;
        wp_nonce_field( 'silent_update_custom_box', 'silent_update_custom_box_nonce' );
        $datef = __( 'M j, Y @ G:i', 'silent-update' );
        $date = date_i18n( $datef, get_post_modified_time( 'U', false, $post ) );
        // Checkbox default is checked
        $checked = checked( true, true, false );
        echo '<div class="misc-pub-section">
            <input type="checkbox" id="modification_date" name="modification_date" value="1" ' . $checked . ' />
            <label for="modification_date">' . __( 'Do not update modification date', 'silent-update' ) . '</label>
        </div>
        <div class="misc-pub-section">' . __( 'Modified on:', 'silent-update' ) . ' <b>' . $date . '</b></div>';
    }
    /**
     * Skip updating the modification date if the checkbox is selected.
     */
    public function filter_handler( $data, $postarr ) {
        // Check if the nonce is set and valid
        if ( ! isset( $_POST['silent_update_custom_box_nonce'] ) || ! wp_verify_nonce( $_POST['silent_update_custom_box_nonce'], 'silent_update_custom_box' ) ) {
            return $data;
        }
        // If "Do not update modification date" checkbox is checked
        if ( isset( $_POST['modification_date'] ) && $_POST['modification_date'] ) {
            $data['post_modified'] = $data['post_date']; // Keep the original post date
            $data['post_modified_gmt'] = get_gmt_from_date( $data['post_date'] );
        }
        // If checkbox is not checked, do nothing - let WordPress handle it automatically
        
        return $data;
    }
}
?>