public function ins()
 {
     $pid = isset($_GET['pid']) ? addslashes($_GET['pid']) : die("no pid");
     $tex = isset($_POST['tex']) ? addslashes($_POST['tex']) : die("no pid");
     $type = isset($_GET['type']) ? addslashes($_GET['type']) : "page";
     $json = array();
     $json['bool'] = 0;
     $pc = new PageComment();
     $pc->comment_text = $tex;
     $pc->comment_date = leap_mysqldate();
     $pc->comment_author = Account::getMyID();
     $pc->comment_page_id = $pid;
     $pc->comment_type = $type;
     $json['bool'] = $pc->save();
     die(json_encode($json));
 }