is_single( int|string|array $post = '' )

Is the query for an existing single post?

Description

Works for any post type, except attachments and pages

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

See also

Parameters

$post

(int|string|array) (Optional) Post ID, title, slug, or array of such.

Default value: ''

Return

(bool) Whether the query is for an existing single post.

Source

File: wp-includes/query.php 

function is_single( $post = '' ) {
	global $wp_query;

	if ( ! isset( $wp_query ) ) {
		_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), 'WP-3.1.0' );
		return false;
	}

	return $wp_query->is_single( $post );
}

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Related

Uses

Uses
Uses Description
wp-includes/l10n.php: __()

Retrieve the translation of $text.
wp-includes/class-wp-query.php: WP_Query::is_single()

Is the query for an existing single post?
wp-includes/functions.php: _doing_it_wrong()

Mark something as being incorrectly called.

Used By

Used By
Used By Description
wp-includes/general-template.php: wp_title()

Display or retrieve page title for all areas of blog.
wp-includes/link-template.php: get_previous_posts_link()

Retrieves the previous posts page link.
wp-includes/link-template.php: get_next_posts_page_link()

Retrieves the next posts page link.
wp-includes/link-template.php: get_next_posts_link()

Retrieves the next posts page link.
wp-includes/link-template.php: get_previous_posts_page_link()

Retrieves the previous posts page link.
wp-includes/link-template.php: adjacent_posts_rel_link_wp_head()

Displays relational links for the posts adjacent to the current post for single post pages.
wp-includes/link-template.php: get_boundary_post()

Retrieves the boundary post.
wp-includes/post-template.php: get_body_class()

Retrieve the classes for the body element as an array.
wp-includes/canonical.php: redirect_canonical()

Redirects incoming links to the proper URL based on the site url.
wp-includes/comment-template.php: comments_template()

Load the comment template specified in $file.
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Changelog

Changelog
Version Description
WP-1.5.0 Introduced.