blocks|key|5834425|text|您需要将每个成功登录(每个用户会话)存储在一个表中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5834426|然后，您可以使用查询检索它。|5834427|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

You need to store in one of your tables each successful login (each user session).

Then you can retrieve it with a query.

blocks|key|2049611|text|更改以下行|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2049612|$vals+=+mysql_fetch_row($res);|code-block|syntax|javascript|2049613|至|2049614|$vals+=+mysql_fetch_array($res);|2049615|*_And请停止使用mysql__函数开始使用mysqli_*|2049616|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Change the following line 

<pre><code>$vals = mysql_fetch_row($res);
</code></pre>

to 

<pre><code>$vals = mysql_fetch_array($res);
</code></pre>

*And please stop using mysql_ functions start using mysqli_*

blocks|key|4366377|text|为什么不在像active这样的用户表中添加一个字段。当用户登录时，将该值更改为1；当用户注销时，将该值更改为0。因此，您可以轻松查询登录的用户。如您的查询所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4366378|$sql+=+"SELECT+user+FROM+users_table+WHERE+active+=+'1'+";|code-block|syntax|javascript|4366379|在这种情况下，它将为您提供当前登录的用户列表。|4366380|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

why not add a field in your table of users like active. And when the user logs in change the value to 1 and when the user logs out change the value to 0. So you can easily query the logged in users. like in your query:

<pre><code>$sql = "SELECT user FROM users_table WHERE active = '1' ";
</code></pre>

in that case, it will give you a list of users who are currently logged in.

blocks|key|1626736|text|我在修改我的代码后得到了正确的答案，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1626737|$res+=+mysql_query("select+*+from+usertable+");
while($row+=+mysql_fetch_array($res,MYSQL_ASSOC))+{
++$row['username']=$row['name'];
++echo+"$row";
++$row_set[]+=+$row;//build+an+array
}

echo+json_encode($row_set);|code-block|syntax|javascript|1626738|谢谢你给我的回复。。|1626739|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I got correct answer after changing my code like ,

<pre><code>$res = mysql_query("select * from usertable ");
while($row = mysql_fetch_array($res,MYSQL_ASSOC)) {
 $row['username']=$row['name'];
 echo "$row";
 $row_set[] = $row;//build an array
}

echo json_encode($row_set);
</code></pre>

Thanks for all the response i got. .

<pre><code>mysql_connect("localhost","root","");
mysql_select_db("db");
session_start();
ob_start();
if(!isset($_SESSION["username"])) {
header("location:login.php");
}
$res = mysql_query("select * from usertable");
$vals = mysql_fetch_row($res);
foreach($vals as $k) {
 echo "$k";
}
</code></pre>

here after logged in , i want to select all the users, so that in my search engine it will come. But i am not able to do that.. How to see all other users here so that i can go to their profile and give add as a friend.I dont want to use any facebook sdk api. By just simple database management.

after logeed in using php session , how to select all the other users?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云代码分析专区

腾讯iOA零信任安全管理系统专区

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋

腾讯云代码助手

云原生构建

TAPD 敏捷项目管理

Cloud Studio

SDK中心

API中心

命令行工具

涵盖代码开发、场景应用、自动测试全流程，助你从零构建专属AI助手

一站式MCP教程库，解锁AI应用新玩法

mysql_connect("localhost","root","");mysql_select_db("db");session_start();ob_start();if(!isset($_SESSION["username"])) {header("location:login.php");}$res = my...

问使用php session登录后，如何选择所有其他用户？
EN

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问使用php session登录后，如何选择所有其他用户？EN