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wp_get_attachment_thumb_file( int $post_id )

Retrieve thumbnail for an attachment.

Description

Parameters

$post_id

(int) (Optional) Attachment ID. Default 0.

Return

(string|false) False on failure. Thumbnail file path on success.

Source

File: wp-includes/post.php

function wp_get_attachment_thumb_file( $post_id = 0 ) {
	$post_id = (int) $post_id;
	if ( ! $post = get_post( $post_id ) ) {
		return false;
	}
	if ( ! is_array( $imagedata = wp_get_attachment_metadata( $post->ID ) ) ) {
		return false;
	}

	$file = get_attached_file( $post->ID );

	if ( ! empty( $imagedata['thumb'] ) && ( $thumbfile = str_replace( wp_basename( $file ), $imagedata['thumb'], $file ) ) && file_exists( $thumbfile ) ) {
		/**
		 * Filters the attachment thumbnail file path.
		 *
		 * @since 2.1.0
		 *
		 * @param string $thumbfile File path to the attachment thumbnail.
		 * @param int    $post_id   Attachment ID.
		 */
		return apply_filters( 'wp_get_attachment_thumb_file', $thumbfile, $post->ID );
	}
	return false;
}

Changelog

Version Description
2.1.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/wp_get_attachment_thumb_file