Question

wp_get_attachment_thumb_url( int $post_id )

Retrieve URL for an attachment thumbnail.

---

description

---

参数

$post_id

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

---

返回值

(string|false) False on failure. Thumbnail URL on success.

---

源代码

File: wp-includes/post.php

function wp_get_attachment_thumb_url( $post_id = 0 ) {
	$post_id = (int) $post_id;
	if ( !$post = get_post( $post_id ) )
		return false;
	if ( !$url = wp_get_attachment_url( $post->ID ) )
		return false;

	$sized = image_downsize( $post_id, 'thumbnail' );
	if ( $sized )
		return $sized[0];

	if ( !$thumb = wp_get_attachment_thumb_file( $post->ID ) )
		return false;

	$url = str_replace(basename($url), basename($thumb), $url);

	/**
	 * Filters the attachment thumbnail URL.
	 *
	 * @since 2.1.0
	 *
	 * @param string $url     URL for the attachment thumbnail.
	 * @param int    $post_id Attachment ID.
	 */
	return apply_filters( 'wp_get_attachment_thumb_url', $url, $post->ID );
}

---

更新日志

Version	description
2.1.0	Introduced.

---

相关函数

Uses

• wp-includes/plugin.php: apply_filters()
• wp-includes/media.php: image_downsize()
• wp-includes/post.php: wp_get_attachment_url()
• wp-includes/post.php: wp_get_attachment_thumb_file()
• wp-includes/post.php: wp_get_attachment_thumb_url
• wp-includes/post.php: get_post()
Show 1 more use Hide more uses

---

Used By

• wp-includes/deprecated.php: get_attachment_icon_src()

---

User Contributed Notes

1. Skip to note content You must log in to vote on the helpfulness of this noteVote results for this note: 0You must log in to vote on the helpfulness of this note Contributed by Codex

   Basic Example

   
   <?php 
   $thumb_id = 25;
   $url = wp_get_attachment_thumb_url( $thumb_id );
   ?>
   <img src="<?php echo $url ?>"/>