count_user_posts( int $userid, array|string $post_type = 'post', bool $public_only = false )

Number of posts user has written.

Parameters

$userid

(int) (Required) User ID.

$post_type

(array|string) (Optional) Single post type or array of post types to count the number of posts for.

Default value: 'post'

$public_only

(bool) (Optional) Whether to only return counts for public posts.

Default value: false

Return

(string) Number of posts the user has written in this post type.

Source

File: wp-includes/user.php

function count_user_posts( $userid, $post_type = 'post', $public_only = false ) {
	global $wpdb;

	$where = get_posts_by_author_sql( $post_type, true, $userid, $public_only );

	$count = $wpdb->get_var( "SELECT COUNT(*) FROM $wpdb->posts $where" );

	/**
	 * Filters the number of posts a user has written.
	 *
	 * @since 2.7.0
	 * @since 4.1.0 Added `$post_type` argument.
	 * @since 4.3.1 Added `$public_only` argument.
	 *
	 * @param int          $count       The user's post count.
	 * @param int          $userid      User ID.
	 * @param string|array $post_type   Single post type or array of post types to count the number of posts for.
	 * @param bool         $public_only Whether to limit counted posts to public posts.
	 */
	return apply_filters( 'get_usernumposts', $count, $userid, $post_type, $public_only );
}

Changelog

Version Description
4.3.0 Added $public_only argument. Added the ability to pass an array of post types to $post_type.
4.1.0 Added $post_type argument.
3.0.0 Introduced.

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/count_user_posts