Of course, you don’t have to use a plugin to clone a page or post in WordPress. This can also be done manually, by either editing the funtions.php file or copying and pasting the relevant code.

You’ve to copy and paste the following code to the theme functions file:

Theme Function File (function.php): You can locate this file in the Theme of the WordPress website. You can edit this file from the WordPress dashboard through Appearance > Theme Editor.

function ab_duplicate_post_link( $actions, $post ) {

if( ! current_user_can( 'edit_posts' ) ) {
	return $actions;
}

$url = wp_nonce_url(
	add_query_arg(
		array(
			'action' => 'ab_duplicate_post_as_draft',
			'post' => $post->ID,
		),
		'admin.php'
	),
	basename(__FILE__),
	'duplicate_nonce'
);

$actions[ 'duplicate' ] = '<a href="' . $url . '" title="Duplicate this item" rel="permalink">Duplicate</a>';

return $actions;
}

/*
* Function creates post duplicate as a draft and redirects then to the edit post screen
*/
add_action( 'admin_action_ab_duplicate_post_as_draft', 'ab_duplicate_post_as_draft' );

function ab_duplicate_post_as_draft(){

// check if post ID has been provided and action
if ( empty( $_GET[ 'post' ] ) ) {
	wp_die( 'No post to duplicate has been provided!' );
}

// Nonce verification
if ( ! isset( $_GET[ 'duplicate_nonce' ] ) || ! wp_verify_nonce( $_GET[ 'duplicate_nonce' ], basename( __FILE__ ) ) ) {
	return;
}

// Get the original post id
$post_id = absint( $_GET[ '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 (I am sure it is, but just in a case), create the post duplicate
if ( $post ) {

	// 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( get_post_type( $post ) ); // returns array of taxonomy names for post type, ex array("category", "post_tag");
	if( $taxonomies ) {
		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
	$post_meta = get_post_meta( $post_id );
	if( $post_meta ) {

		foreach ( $post_meta as $meta_key => $meta_values ) {

			if( '_wp_old_slug' == $meta_key ) { // do nothing for this meta key
				continue;
			}

			foreach ( $meta_values as $meta_value ) {
				add_post_meta( $new_post_id, $meta_key, $meta_value );
			}
		}
	}

	wp_safe_redirect(
		add_query_arg(
			array(
				'post_type' => ( 'post' !== get_post_type( $post ) ? get_post_type( $post ) : false ),
				'saved' => 'post_duplication_created' // just a custom slug here
			),
			admin_url( 'edit.php' )
		)
	);
	exit;

} else {
	wp_die( 'Post creation failed, could not find original post.' );
}

}

/*
* In case we decided to add admin notices
*/
add_action( 'admin_notices', 'rudr_duplication_admin_notice' );

function rudr_duplication_admin_notice() {

// Get the current screen
$screen = get_current_screen();

if ( 'edit' !== $screen->base ) {
	return;
}

//Checks if settings updated
if ( isset( $_GET[ 'saved' ] ) && 'post_duplication_created' == $_GET[ 'saved' ] ) {

	 echo '<div class="notice notice-success is-dismissible"><p>Post copy created.</p></div>';
	 
}
}

add_filter( 'page_row_actions', 'ab_duplicate_post_link', 10, 2 );

To enable cloning for posts as well, use the same code but replace the final line with:

add_filter( 'post_row_actions', 'ab_duplicate_post_link', 10, 2 );

source : https://wpengine.com/resources/how-to-duplicate-page-wordpress/

Last Update on:March 5th, 2023 at 5:19 pm

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