get_post_meta


      get_post_meta ( $post_id, $key = '', $single = false )

参数

(int) $post_id Post ID.

Required: 是
(string) $key Optional. The meta key to retrieve. By default, returns data for all keys. Default empty.

Required: 否

Default: (empty)
(bool) $single Optional. Whether to return a single value. This parameter has no effect if `$key` is not specified. Default false.

Required: 否

Default: false

返回值

(mixed) An array of values if `$single` is false. The value of the meta field if `$single` is true. False for an invalid `$post_id` (non-numeric, zero, or negative value). An empty string if a valid but non-existing post ID is passed.

定义位置

相关方法: get_site_meta get_post_time get_post_timestamp delete_post_meta get_post_meta_by_id

get_post_meta函数检索特定post-meta字段的值。它有三个参数：第一个参数是文章的ID，第二个参数是元字段的名称，第三个参数是一个布尔值，指示检索到的值应该是单个值还是一个值数组。

为给定的文章ID检索一个文章元字段。

function get_post_meta( $post_id, $key = '', $single = false ) {
	return get_metadata( 'post', $post_id, $key, $single );
}