在while循环php上设置链接

Question

$query = mysql_query("SELECT * FROM mailtbl WHERE fromuser = '$adminsess' AND sent = '1'");

echo "To Subject Date View message";

while($fetch = mysql_fetch_assoc($query)) {

    $mid = $fetch['mid'];
    $to = $fetch['touser'];
    $subject2 = $fetch['subject'];
    $message2 = $fetch['message'];
    $date2 = $fetch['datesent'];
    $rand = $fetch['rand'];
    $view = "<a href = 'messages.php?mode=".$sent."&view=".$rand."'>View message</a>";

    echo "$to$subject2$date2$view";

}

echo "</table>";

if (isset($view)) {

    $viewget = $_GET['view'];

    if ($viewget== $rand) {

        echo "hi";
        echo "$message2";

    } 
}

The $view there suppose to open the content of each message. The main problem is, if I have multiple values in the table, after clicking the link in each row in the table, the only link that is functioning is in the last row. The previous rows in the table with links doesn't show the content of the message (which is echo "hi" & echo "$message2";). What exactly is wrong with my code? thanks.

Answer 1

Your code to display the message is outside the while loop. If you want it to run for every message, then put it in the loop that is iterating over every message.

Answer 2

The problem is that $rand is not set inside the isset($view) check. $rand still contains the last value from the while loop above, so only the last $viewget / $rand will work.

My guess is that messages.php shows all available messages (the message list) and if clicked on one message, the message list and that selected message.

So first, before the while loop, you fetch the message identifier of the message to be shown:

$ViewRequested = isset($_GET['view']) ? $_GET['view'] : -1;
$ViewRequestedData = NULL;

Next, inside the while loop, you check if the user is allowed to view the selected message, and remember the record:

if ($rand == $ViewRequested) {
    $ViewRequestedData = $fetch;
}

Finally, after the while loop, you check whether there is a valid message requested:

if (is_array($ViewRequestedData) {
    echo $ViewRequestedData['message2'];
}