wp_get_attachment_thumb_file()返回附件的缩略图(特色图像)文件路径

目录

描述

译文

返回附件的缩略图

原文

Retrieve thumbnail for an attachment.

wp_get_attachment_thumb_file() 描述

用法

<?php wp_get_attachment_thumb_file$attachment_id ); ?>

wp_get_attachment_thumb_file() 用法

参数

$attachment_id

(integer) (可选) Attachment ID.

默认值: 0

wp_get_attachment_thumb_file() 参数

返回值

(string|boolean

False on failure. Thumbnail file path on success.

wp_get_attachment_thumb_file() 返回值

历史

添加于 版本: 2.1.0

wp_get_attachment_thumb_file() 历史

源文件

wp_get_attachment_thumb_file() 函数的代码位于 wp-includes/post.php.

/* ----------------------------------
 * wordpress之魂 © http://wphun.com
 * ---------------------------------- */
/**
 * Retrieve thumbnail for an attachment.
 *
 * @since 2.1.0
 *
 * @param int $post_id Optional. Attachment ID. Default 0.
 * @return string|false False on failure. Thumbnail file path on success.
 */
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(basename($file), $imagedata['thumb'], $file)) && file_exists($thumbfile) ) {
		/**
		 * Filter 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;
}

wp_get_attachment_thumb_file() 源文件

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