Question

我试图在会话中保留$ id值，以便可以在分页时有效地使用它...

  if(empty($_GET["cat"])){
        $session->message('<div class="error-msg">No product was selected.</div>');
        redirect_to("view_all.php");
    }else{
        $id         = $database->escape_value($_GET["cat"]);

        $page = !empty($_GET['page']) ? (int)$_GET['page'] : 1;

        $per_page = 50;

        $sql = "SELECT COUNT(*) FROM products WHERE category='$id'";
        $sql = $database->query($sql);
        $sql = $database->fetch_array($sql);
        $total_count = array_shift($sql);

        $pagination = new Pagination($page, $per_page, $total_count);

        $sql = "SELECT * FROM products WHERE category='$id'";   
        $sql .= " ORDER by id DESC";
        $sql .= " LIMIT {$per_page} ";
        $sql .= "OFFSET {$pagination->offset()}";
        $result = Product::find_by_sql($sql);   
    }

Answer 1

您不是应该首先使用以下命令启动会话：session_start()吗？然后将其添加到$_SESSION而不是$session中。如果您将其设置为$session，则与其他任何变量一样，但$_SESSION是官方的PHP会话变量

如何在会话中保留$ _GET变量值

1 个答案: