php - 如何设置数据库以标记已阅读消息？

Question

这是我的“阅读消息”代码...

我想添加一个代码来知道消息是否已被阅读...

<?php
session_start();
$userfinal=$_SESSION['sessioname'];
require "config.php";

$messageid = $_GET['messageid'];
$message = mysql_query("SELECT * FROM messages WHERE message_id = '$messageid' AND to_user = '$userfinal'");
$message=mysql_fetch_assoc($message);

echo "<h1>Title: ".$message['message_title']."</h1><br><br>";
echo "<h3>From: ".$message['from_user']."<br><br></h3>";
echo "<h3>Message: <br>".$message['message_contents']."<br></h3>";

echo '<form name="backfrm" method="post" action="inbox.php">';
echo '<input type="submit" value="Back to Inbox">';
echo '</form>';
?>

Answer 1

好吧，如果用户访问此页面，他们已经阅读了这封电子邮件。因此，只需将消息表的更新添加到此代码中：

<?php
session_start();
$userfinal=$_SESSION['sessioname'];
require "config.php";

$messageid = $_GET['messageid'];
$message = mysql_query("SELECT * FROM messages WHERE message_id = '$messageid' AND to_user = '$userfinal'");
$message=mysql_fetch_assoc($message);

// set message as read
$result = mysql_query("UPDATE messages SET `has_been_read` = 1 WHERE message_id = '$messageid'");
if ( !$result ) {
    // error updating the message to has_been_read
    // This bit is up to you!!!
}


echo "<h1>Title: ".$message['message_title']."</h1><br><br>";
echo "<h3>From: ".$message['from_user']."<br><br></h3>";
echo "<h3>Message: <br>".$message['message_contents']."<br></h3>";

echo '<form name="backfrm" method="post" action="inbox.php">';
echo '<input type="submit" value="Back to Inbox">';
echo '</form>';
?>