is_single( int|string|int[]|string[] $post = ” )

确定查询是否针对现有的单个日志。
Determines whether the query is for an existing single post.

目录锚点：#说明#参数#返回#源码

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说明（Description）

另见函数 is_page()

参数（Parameters）

返回（Return）

（bool）查询是否针对现有的单个post。

源码（Source）

/**
 * Is the query for an existing single post?
 *
 * Works for any post type, except attachments and pages
 *
 * If the $post parameter is specified, this function will additionally
 * check if the query is for one of the Posts specified.
 *
 * @see is_page()
 * @see is_singular()
 *
 * @since 1.5.0
 *
 * @global WP_Query $wp_query
 *
 * @param mixed $post Post ID, title, slug, or array of such.
 * @return bool
 */
function is_single( $post = '' ) {
	global $wp_query;

	if ( ! isset( $wp_query ) ) {
		_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1' );
		return false;
	}

	return $wp_query->is_single( $post );
}