Title: WP_Query::is_single
Published: April 25, 2014
Last modified: February 24, 2026

---

# WP_Query::is_single( int|string|int[]|string[] $post ): bool

## In this article

 * [Description](https://developer.wordpress.org/reference/classes/wp_query/is_single/?output_format=md#description)
    - [See also](https://developer.wordpress.org/reference/classes/wp_query/is_single/?output_format=md#see-also)
 * [Parameters](https://developer.wordpress.org/reference/classes/wp_query/is_single/?output_format=md#parameters)
 * [Return](https://developer.wordpress.org/reference/classes/wp_query/is_single/?output_format=md#return)
 * [Source](https://developer.wordpress.org/reference/classes/wp_query/is_single/?output_format=md#source)
 * [Related](https://developer.wordpress.org/reference/classes/wp_query/is_single/?output_format=md#related)
 * [Changelog](https://developer.wordpress.org/reference/classes/wp_query/is_single/?output_format=md#changelog)

[ Back to top](https://developer.wordpress.org/reference/classes/wp_query/is_single/?output_format=md#wp--skip-link--target)

Determines whether the query is for an existing single post.

## 󠀁[Description](https://developer.wordpress.org/reference/classes/wp_query/is_single/?output_format=md#description)󠁿

Works for any post type excluding pages.

If the $post parameter is specified, this function will additionally check if the
query is for one of the Posts specified.

### 󠀁[See also](https://developer.wordpress.org/reference/classes/wp_query/is_single/?output_format=md#see-also)󠁿

 * [WP_Query::is_page()](https://developer.wordpress.org/reference/classes/WP_Query/is_page/)
 * [WP_Query::is_singular()](https://developer.wordpress.org/reference/classes/WP_Query/is_singular/)

## 󠀁[Parameters](https://developer.wordpress.org/reference/classes/wp_query/is_single/?output_format=md#parameters)󠁿

 `$post`int|string|int[]|string[]optional

Post ID, title, slug, path, or array of such to check against. Default empty.

## 󠀁[Return](https://developer.wordpress.org/reference/classes/wp_query/is_single/?output_format=md#return)󠁿

 bool Whether the query is for an existing single post.

## 󠀁[Source](https://developer.wordpress.org/reference/classes/wp_query/is_single/?output_format=md#source)󠁿

    ```php
    public function is_single( $post = '' ) {
    	if ( ! $this->is_single ) {
    		return false;
    	}

    	if ( empty( $post ) ) {
    		return true;
    	}

    	$post_obj = $this->get_queried_object();
    	if ( ! $post_obj ) {
    		return false;
    	}

    	$post = array_map( 'strval', (array) $post );

    	if ( in_array( (string) $post_obj->ID, $post, true ) ) {
    		return true;
    	} elseif ( in_array( $post_obj->post_title, $post, true ) ) {
    		return true;
    	} elseif ( in_array( $post_obj->post_name, $post, true ) ) {
    		return true;
    	} else {
    		foreach ( $post as $postpath ) {
    			if ( ! strpos( $postpath, '/' ) ) {
    				continue;
    			}

    			$postpath_obj = get_page_by_path( $postpath, OBJECT, $post_obj->post_type );

    			if ( $postpath_obj && ( $postpath_obj->ID === $post_obj->ID ) ) {
    				return true;
    			}
    		}
    	}
    	return false;
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/class-wp-query.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/6.9.4/src/wp-includes/class-wp-query.php#L4674)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/class-wp-query.php#L4674-L4710)

## 󠀁[Related](https://developer.wordpress.org/reference/classes/wp_query/is_single/?output_format=md#related)󠁿

| Uses | Description | 
| [WP_Query::get_queried_object()](https://developer.wordpress.org/reference/classes/wp_query/get_queried_object/)`wp-includes/class-wp-query.php` |

Retrieves the currently queried object.

  | 
| [get_page_by_path()](https://developer.wordpress.org/reference/functions/get_page_by_path/)`wp-includes/post.php` |

Retrieves a page given its path.

  |

| Used by | Description | 
| [WP_Query::generate_postdata()](https://developer.wordpress.org/reference/classes/wp_query/generate_postdata/)`wp-includes/class-wp-query.php` |

Generates post data.

  | 
| [WP::register_globals()](https://developer.wordpress.org/reference/classes/wp/register_globals/)`wp-includes/class-wp.php` |

Set up the WordPress Globals.

  | 
| [is_single()](https://developer.wordpress.org/reference/functions/is_single/)`wp-includes/query.php` |

Determines whether the query is for an existing single post.

  |

## 󠀁[Changelog](https://developer.wordpress.org/reference/classes/wp_query/is_single/?output_format=md#changelog)󠁿

| Version | Description | 
| [3.1.0](https://developer.wordpress.org/reference/since/3.1.0/) | Introduced. |

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