WordPress开发手册:get_attached_file()

函数原型

get_attached_file( int $attachment_id, bool $unfiltered = false ): string|false

函数描述

是否弃用

未弃用

函数参数

$attachment_id
int
Required

Attachment ID.

$unfiltered
bool
Optional

Whether to apply filters.

Default: false

函数返回值

函数位置

函数源码

function get_attached_file( $attachment_id, $unfiltered = false ) {
	$file = get_post_meta( $attachment_id, '_wp_attached_file', true );

	// If the file is relative, prepend upload dir.
	if ( $file && 0 !== strpos( $file, '/' ) && ! preg_match( '|^.:\\\|', $file ) ) {
		$uploads = wp_get_upload_dir();
		if ( false === $uploads['error'] ) {
			$file = $uploads['basedir'] . "/$file";
		}
	}

	if ( $unfiltered ) {
		return $file;
	}

	/**
	 * Filters the attached file based on the given ID.
	 *
	 * @since 2.1.0
	 *
	 * @param string|false $file          The file path to where the attached file should be, false otherwise.
	 * @param int          $attachment_id Attachment ID.
	 */
	return apply_filters( 'get_attached_file', $file, $attachment_id );
}

源码链接

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