set_post_thumbnail( int|WP_Post $post, int $thumbnail_id )

Set a post thumbnail.

Description Description

Parameters Parameters


(int|WP_Post) (Required) Post ID or post object where thumbnail should be attached.


(int) (Required) Thumbnail to attach.

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Return Return

(int|bool) True on success, false on failure.

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Source Source

File: wp-includes/post.php

function set_post_thumbnail( $post, $thumbnail_id ) {
	$post = get_post( $post );
	$thumbnail_id = absint( $thumbnail_id );
	if ( $post && $thumbnail_id && get_post( $thumbnail_id ) ) {
		if ( wp_get_attachment_image( $thumbnail_id, 'thumbnail' ) )
			return update_post_meta( $post->ID, '_thumbnail_id', $thumbnail_id );
			return delete_post_meta( $post->ID, '_thumbnail_id' );
	return false;

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Changelog Changelog

Version Description
3.1.0 Introduced.

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