Question

我有我的Web应用程序，并且它具有（注册表，添加信息，查看信息和搜索以及所有这些选择，都在导航栏菜单的同一页面中）我为每个用户启动会话（登录时），一切正常，直到我搜索到某个东西，然后得到搜索结果，然后转到添加或查看我发现已注销的信息，这意味着会话破坏了为什么发生了什么？我希望用户即使在完成搜索后也可以登录，请帮助我并向我道歉，如果我输入错了。这是我的搜索部分代码：

<form class="navbar-form navbar-left" action=""  method="post">
                <div class="input-group">
                    <input size=55 type="text"   name="search" class="form-control" placeholder="Search">
                    <span class="input-group-btn">
                        <button type="submit"  class="btn btn-default"><span class="glyphicon glyphicon-search"></span></button>
                    </span>
                </div>
            </form>


    </nav>
</div>

        <?php
if(!isset($_SESSION)){session_start();}
 $conn = mysql_connect("localhost", "root", '');

  mysql_select_db("db103",$conn);
$user=$_SESSION["myname"];
        $fname = '';

if (isset($_POST['search']))
{
    $fname = $_POST['search'];
}
else{}
if(isset($_SESSION["myname"])){
 $sql = "SELECT * FROM telephone_guide where owner='$user' and (firstName like '%$fname%' or secondName like '%$fname%' or phonenumber like '%$fname%' or celnumber like '%$fname%')";


 $result = mysql_query($sql, $conn) ;

//  number of rows fetched
$num = mysql_num_rows($result);

echo("<div class='styl'>");
echo("<table width=300 border=3 >");

echo("<th>ID<th>First Name<th>Second Name<th>tele-Phone Number<th>cel_phone number<th>Date<th>Address");


 while ($arr = mysql_fetch_array($result)) {


echo("<tr><td><a href='update1.php?id1=$arr[0]'>$arr[0]</td><td>$arr[2]</td><td>$arr[3]</td><td>$arr[4]</td><td>$arr[5]</td><td>$arr[6]</td><td>$arr[7]</td></tr>");


 }
echo("</table>");

?>
<br>
<br>
<?php
echo("</div>");} 

    ?>

Answer 1

您需要先初始化会话您还可以在脚本的最后看到 ob_start（）和 ob_flush_end（）。这是为了抑制由于php中的html插入而已发送的数据包引起的错误

所以试试这个

<?php
ob_start();
session_start();
?>




<form class="navbar-form navbar-left" action=""  method="post">
                <div class="input-group">
                    <input size=55 type="text"   name="search" class="form-control" placeholder="Search">
                    <span class="input-group-btn">
                        <button type="submit"  class="btn btn-default"><span class="glyphicon glyphicon-search"></span></button>
                    </span>
                </div>
            </form>


    </nav>
</div>

        <?php

if(isset($_SESSION)){}



 $conn = mysql_connect("localhost", "root", '');

  mysql_select_db("db103",$conn);
$user=$_SESSION["myname"];
        $fname = '';

if (isset($_POST['search']))
{
    $fname = $_POST['search'];
}
else{}
if(isset($_SESSION["myname"])){
 $sql = "SELECT * FROM telephone_guide where owner='$user' and (firstName like '%$fname%' or secondName like '%$fname%' or phonenumber like '%$fname%' or celnumber like '%$fname%')";


 $result = mysql_query($sql, $conn) ;

//  number of rows fetched
$num = mysql_num_rows($result);

echo("<div class='styl'>");
echo("<table width=300 border=3 >");

echo("<th>ID<th>First Name<th>Second Name<th>tele-Phone Number<th>cel_phone number<th>Date<th>Address");


 while ($arr = mysql_fetch_array($result)) {


echo("<tr><td><a href='update1.php?id1=$arr[0]'>$arr[0]</td><td>$arr[2]</td><td>$arr[3]</td><td>$arr[4]</td><td>$arr[5]</td><td>$arr[6]</td><td>$arr[7]</td></tr>");


 }
echo("</table>");

?>
<br>
<br>
<?php
echo("</div>");} 

    ?>
<?php ob_end_flush(); ?>

显示搜索结果后会话被破坏

1 个答案: