is_attachment()

最后更新于：2021-11-27 08:12:39

Determines whether the query is for an existing attachment page.

参数

$attachment

(int|string|int[]|string[]) (Optional) Attachment ID, title, slug, or array of such to check against.

Default value: ”

响应

(bool) Whether the query is for an existing attachment page.

源文件

文件: gc-includes/query.php

function is_attachment( $attachment = '' ) {
	global $gc_query;

	if ( ! isset( $gc_query ) ) {
		_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
		return false;
	}

	return $gc_query->is_attachment( $attachment );
}