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Learn how to easily duplicate posts and add a convenient duplicate button in WordPress. This snippet covers pull request updates including new features and security fixes.
<?php
/*
* Function for post duplication. Dups appear as drafts. User is redirected to the edit screen
*/
function rd_duplicate_post_as_draft(){
global $wpdb;
if (! ( isset( $_GET['post']) || isset( $_POST['post']) || ( isset($_REQUEST['action']) && 'rd_duplicate_post_as_draft' == $_REQUEST['action'] ) ) ) {
wp_die('No post to duplicate has been supplied!');
}
/*
* Nonce verification
*/
if ( !isset( $_GET['duplicate_nonce'] ) || !wp_verify_nonce( $_GET['duplicate_nonce'], basename( __FILE__ ) ) )
return;
/*
* get the original post id
*/
$post_id = (isset($_GET['post']) ? absint( $_GET['post'] ) : absint( $_POST['post'] ) );
/*
* and all the original post data then
*/
$post = get_post( $post_id );
/*
* if you don't want current user to be the new post author,
* then change next couple of lines to this: $new_post_author = $post->post_author;
*/
$current_user = wp_get_current_user();
$new_post_author = $current_user->ID;
/*
* if post data exists, create the post duplicate
*/
if (isset( $post ) && $post != null) {
/*
* new post data array
*/
$args = array(
'comment_status' => $post->comment_status,
'ping_status' => $post->ping_status,
'post_author' => $new_post_author,
'post_content' => $post->post_content,
'post_excerpt' => $post->post_excerpt,
'post_name' => $post->post_name,
'post_parent' => $post->post_parent,
'post_password' => $post->post_password,
'post_status' => 'draft',
'post_title' => $post->post_title,
'post_type' => $post->post_type,
'to_ping' => $post->to_ping,
'menu_order' => $post->menu_order
);
/*
* insert the post by wp_insert_post() function
*/
$new_post_id = wp_insert_post( $args );
/*
* get all current post terms ad set them to the new post draft
*/
$taxonomies = get_object_taxonomies($post->post_type); // returns array of taxonomy names for post type, ex array("category", "post_tag");
foreach ($taxonomies as $taxonomy) {
$post_terms = wp_get_object_terms($post_id, $taxonomy, array('fields' => 'slugs'));
wp_set_object_terms($new_post_id, $post_terms, $taxonomy, false);
}
/*
* duplicate all post meta just in two SQL queries
*/
$post_meta_infos = $wpdb->get_results("SELECT meta_key, meta_value FROM $wpdb->postmeta WHERE post_id=$post_id");
if (count($post_meta_infos)!=0) {
$sql_query = "INSERT INTO $wpdb->postmeta (post_id, meta_key, meta_value) ";
foreach ($post_meta_infos as $meta_info) {
$meta_key = $meta_info->meta_key;
if( $meta_key == '_wp_old_slug' ) continue;
$meta_value = addslashes($meta_info->meta_value);
$sql_query_sel[]= "SELECT $new_post_id, '$meta_key', '$meta_value'";
}
$sql_query.= implode(" UNION ALL ", $sql_query_sel);
$wpdb->query($sql_query);
}
/*
* finally, redirect to the edit post screen for the new draft
*/
// wp_safe_redirect( wp_get_referer() ); // Option to not get redirected to new post edit page, but stay where one was.
// wp_redirect( admin_url( 'post.php?action=edit&post=' . $new_post_id ) ); // replace this line with the following
wp_safe_redirect( admin_url( 'post.php?action=edit&post=' . $new_post_id ) ); // Security related edit: @link https://developer.wordpress.org/reference/functions/wp_safe_redirect/
exit;
} else {
wp_die('Post creation failed, could not find original post: ' . $post_id);
}
}
add_action( 'admin_action_rd_duplicate_post_as_draft', 'rd_duplicate_post_as_draft' );
/*
* Add the duplicate link to action list for post_row_actions
*/
function rd_duplicate_post_link( $actions, $post ) {
if (current_user_can('edit_posts')) {
$actions['duplicate'] = '<a href="' . wp_nonce_url('admin.php?action=rd_duplicate_post_as_draft&post=' . $post->ID, basename(__FILE__), 'duplicate_nonce' ) . '" title="Duplicate this item" rel="permalink">Duplicate</a>';
}
return $actions;
}
add_filter( 'post_row_actions', 'rd_duplicate_post_link', 10, 2 );
add_filter( 'page_row_actions', 'rd_duplicate_post_link', 10, 2 ); // add the link to pages too
Follow these simple steps to add a duplicate button to your WordPress post list:
That’s it! You can now duplicate any post or page with a single click.
Manually copying posts in WordPress involves multiple time-consuming steps. You must copy content, paste it into a new post, re-add categories, tags, and featured images, and set up custom fields and metadata. This repetitive process wastes valuable time that could be spent creating content instead. Manual duplication also increases the risk of errors when you forget to transfer important elements like SEO settings or page templates.
Many site owners install dedicated plugins for post duplication without considering the long-term impact. Each additional plugin adds database queries, code overhead, and potential conflicts with other plugins on your site. Heavy plugin stacks slow down your WordPress performance and create maintenance burdens. You must also keep these plugins updated for security, and plugin incompatibilities can break functionality when you update WordPress or other plugins. The code snippet approach provides identical functionality without these ongoing maintenance requirements.
The duplicate button snippet adds a post duplication feature directly to your WordPress admin interface. You get a clean “Duplicate” button under every post and page title that creates an exact copy as a draft. The snippet preserves all post data including content, formatting, categories, tags, featured images, and metadata automatically. This approach keeps your site lightweight since it doesn’t add plugin overhead or require ongoing maintenance. The snippet works for all post types including posts, pages, and custom post types.
