Question

我是php的新手，所以如果我的问题不明确，请向我道歉。

我在mysql中设置了一个消息表。我能够回复发送给用户的send_by和sent_消息及其发送时间以及如何按时间排序。我的问题是：如何按时间以sent_by和sent_to顺序输出消息，但是像这样

user1: sent 2011-02-12 13:34:26
       hi, how are you

user2: sent 2011-02-12 13:37:26
       who is this?

user1: sent 2011-02-12 13:38:26
       its me

user1: sent 2011-02-12 13:38:50
       from the bar

user1: sent 2011-02-12 13:40:26
       the one in the city

user2: sent 2011-02-12 13:45:26
       Oh hi

我希望显示user2以红色发送的所有内容以及user1以黑色发送的所有内容。我怎么能这样做？

这就是我所做的，但我现在想要的方式不是这样的。

$tomsg  = mysql_query("SELECT * FROM msg WHERE sent_to = 'user1' ");

$inboxmsg_count = mysql_num_rows($tomsg );
if ($inboxmsg_count>0)
{
echo "messages between You and name<br/>";

echo 'total message ('.$inboxmsg_count.')<hr/><br/>';

while ($msg = mysql_fetch_array($tomsg )){
$cmsg = $msg ['cmsg'];
$time_sent = $msg ['time_sent'];
$subj = $msg ['subj'];
echo '<div style="background-color:gray; width:542px; height:auto; padding-left:10px; padding-right:10px"><span style="float:right;">' .$time_sent.'</span><br/><b>' .$subj.'</b><br/> '.$cmsg.'<hr/></div>';
}
$frommsg  = mysql_query("SELECT * FROM msg WHERE sent_by = 'user1' ");
if($inboxmsg_count>0)
{
while ($msg = mysql_fetch_array($frommsg )){
$cmsg = $msg ['cmsg'];
$time_sent = $msg ['time_sent'];
$subj = $msg ['subj'];

echo '<div style="background-color:blue; width:542px; height:auto; padding-left:10px; padding-right:10px"><span style="float:right;">' .$time_sent.'</span><br/><b>' .$subj.'</b><br/> '.$cmsg.'<hr/></div>';

}
}
}
else {echo "you have no messages y}

Answer 1

无需进行两次查询，只需执行类似

的操作即可

SELECT username, the, other, fields, you need
FROM messagestable
ORDER BY timesent

在您的PHP代码中，您可以

while($row = msyql_fetch_assoc(...)) {
   ... pick a color based on $row['username'] ...
   ... display the message using that color ...
}

如何使用php和mysql创建订单消息系统

1 个答案: