Question

我想在会话中存储我的查询结果，当用户刷新页面时，我想向他显示存储在会话中的相同结果。如果session为null，则再次查询，当用户离开页面会话时，应删除。我真正想做的是

if(!isset($_SESSION['result']))
{//if session is null then query database and store result in session
$query="SELECT * from table order by rand()";
$result=mysqli_query($connection,$query);
$_SESSION['result']=$result;
while ($read_all_data = mysqli_fetch_assoc($_SESSION['result']))
{
//echo data
}
else //if there is result in session then dont query just show me data
{
while ($read_all_data = mysqli_fetch_assoc($_SESSION['result']))
{
echo //same data
}
}

我做错了什么。我从database.i中选择随机行想要保留该顺序。按下刷新按钮

，您将无法获得新行

Answer 1

您正在存储mysqli_result对象，并且无法对其进行序列化。您通常无法序列化外部资源。

将所有数据放入数组中，并将其存储在其位置。

if(!isset($_SESSION['result'])) {
    $query = "SELECT * from table order by rand()";
    $result = mysqli_query($connection, $query);

    $all = array();
    while ($row = mysqli_fetch_assoc($result)) {
        $all[] = $row;
    }

    $_SESSION['result'] = $all;
}

foreach ($_SESSION['result'] as $data) {
    // work with $data
}

在会话中存储随机查询结果以保留结果的顺序

1 个答案: