WP_Query::is_single() WP 3.1.0

Is the query for an existing single post?

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.

Это метод класса: WP_Query

Хуков нет.

Возвращает

true/false. Whether the query is for an existing single post.

Использование

$WP_Query = new WP_Query();
$var = $WP_Query->is_single( $post );

$post(число/строка/массив)

Post ID, title, slug, path, or array of such.
По умолчанию: ''

Код WP Query::is single: wp-includes/class-wp-query.php ^{WP 5.2}

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

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

	$post_obj = $this->get_queried_object();

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

	if ( in_array( (string) $post_obj->ID, $post ) ) {
		return true;
	} elseif ( in_array( $post_obj->post_title, $post ) ) {
		return true;
	} elseif ( in_array( $post_obj->post_name, $post ) ) {
		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;
}