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get_meta_keys › WordPress Function

Since1.2.0
已弃用n/a
› get_meta_keys ( 没有参数 )
返回:
  • (string[]) Array of meta key names.
定义在:
文档:

Returns a list of previously defined keys.



Related Functions: get_meta_sql, _get_meta_table, get_media_items, get_registered_meta_keys, unregister_meta_key

源码 

function get_meta_keys() {
	global $wpdb;

	$keys = $wpdb->get_col(
		"SELECT meta_key
		FROM $wpdb->postmeta
		GROUP BY meta_key
		ORDER BY meta_key"
	);

	return $keys;
}