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answer_question.php
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<html lang="en">
<head>
<meta charset="UTF-8">
<title>回答问题</title>
<link rel="stylesheet" type="text/css" href="回答问题.css">
<link rel="stylesheet" type="text/css" href="public.css"><!--外部样式-->
<script type="text/javascript" src="动画.js"></script>
</head>
<body>
<h1>课业难题交流</h1>
<div id="first" onclick=window.open("首页（待登录）.html") onmouseover="over(this)" onmouseout="out(this)"></div>
<div id="textOne">
<p>退出登录</p>
</div>
<div id="second" onclick=window.open("提问.html") onmouseover="over(this)" onmouseout="out(this)"></div>
<div id="textTwo">
<p>我要提问</p>
</div>
<div id="three" onclick=window.open("个人中心.html") onmouseover="over(this)" onmouseout="out(this)"></div>
<div id="textThree">
<p>个人中心</p>
</div>
<div id="four" onclick=window.open("shouye(denglu).php") onmouseover="over(this)" onmouseout="out(this)"></div>
<div id="textFour">
<p>我要搜索</p>
</div>
<center>
<div class="background">
<center>
<div class="transbox">
<center>
<form action="huida.php" method="post" enctype="multipart/form-data">
<!--显示当前问题的内容-->
<input type="text" value="提问人：<?php
$con=mysqli_connect("localhost","root","","users");
if (!$con){
die("连接失败:".mysqli_connect_error());
}
$text=$_GET["content"];
session_start();
$_SESSION['G_content']=$text;//将问题内容设为全局变量便于在回答环节储存
$result=mysqli_query($con, "select * from problem where text_content='$text'");//显示当前提问的内容
$row=mysqli_fetch_array($result);
echo $row["people"];
?>" size="49">
<br>
<input type="text" value="日期：<?php
echo $row["time"];////显示当前提问的时间
?>" size="49">
<br>
<textarea rows="5" cols="50" readonly><?php echo $_GET["content"];?></textarea>
<br>
<!--显示图片-->
<?php
$url=$row["file_url"];
if ($url!="")
{
echo "<img src=$url width='300px'>";
}
?>
<p style="color:white;">我也有同样的疑问:</p>
<?php echo $row["praise_num"]." "."<a href='dianzan.php?content=$text'>"."+1"."</a>"; ?>
<img src="picture_question.jpg">
<br>
<br>
<!--显示当前问题所有回答的内容-->
<?php
$rnum=$row["reply_num"];
$resultx=mysqli_query($con, "select * from reply where problem_text_content='$text'");//显示当前问题所有回答
for ($x=1;$x<=$rnum;$x++)
{
$rowx=mysqli_fetch_array($resultx);
$r_people=$rowx["people"];//设定当前问题的回答人
$r_time=$rowx["time"];
$r_url=$rowx["file_url"];
echo "<input type='text' value='回答人：$r_people' size='49'>";
echo "<br>";
echo "<input type='text' value='日期：$r_time' size='49'>";
echo "<br>";
echo "<textarea rows='5' cols='50' readonly>".$rowx["reply_text_content"]."</textarea>";
echo "<br>";
if ($r_url!="")
{
echo "<img src=$r_url width='300px'>";
}
echo "<br>"."<p style='color:white;'>"."回答很赞:"."</p>".$rowx["praise_num"]." "."<a href='dianzan2.php?content=$text'>"."+1"."</a>"."<br>"."<br>";
}
mysqli_close($con);
?>
<textarea rows="5" cols="50" placeholder="在这里输入你要回复的内容（不多于500字）" maxlength="500" name="textarea" ></textarea>
<br>
<label for="file" style="cursor:pointer;"></label>
<input type="file" name="file" id="file" style="cursor:pointer;">
<input type="submit" name="submit" value="发表" class="upload">
</form>
</center>
</div>
</center>
</div>
</center><!--提供回答功能，回答时可以上传图片。可以通过点击来增加问题的需求度，可以通过点击来增加回答的点赞数-->
</body>
</html>