wordpress get meta(meta_id,post_id,meta_key,meta_value) by meta id

function get_meta_by_meta_id( $meta_id ) {
  global $wpdb;
	  	
	$meta[meta_id]    = $meta_id;
	$meta[post_id]    = $wpdb->get_var( $wpdb->prepare("SELECT post_id FROM $wpdb->postmeta WHERE meta_id = %s", $meta_id) );
	$meta[meta_key]   = $wpdb->get_var( $wpdb->prepare("SELECT meta_key FROM $wpdb->postmeta WHERE meta_id = %s", $meta_id) );
	$meta[meta_value] = $wpdb->get_var( $wpdb->prepare("SELECT meta_value FROM $wpdb->postmeta WHERE meta_id = %s", $meta_id) );

  return $meta;
}