Question

我正在尝试从div中的php脚本中回显变量，但我没有得到任何结果。这是我的代码：

<?php
session_start();
session_name();

$con = mysql_connect("localhost", "root", "") or die(mysql_error()); 
mysql_select_db("bloggers", $con) or die(mysql_error()); 


    $data = "Select * from accountprofile where Username = '" . $_SESSION['Sess_user'] . "' and Password = '" . $_SESSION['Sess_pass'] . "'";

$result = mysql_query($data);

while($row = mysql_fetch_array($result)) {
   $row['Fname'];
   $row['Username'];
   $row['Password'];

  }
  mysql_close($con);

  ?>

这里是我的div，我想显示变量$ row ['Fname'];

<div class="title" style="font-size: 36px;">
    <?php echo $row['Fname']; ?>
</div>

抱歉，我是html和php的新手。请帮助谢谢。

Answer 1

你很亲密。以下是您的代码简化和更正：

<?php
session_start();
session_name();

$con = mysql_connect("localhost", "root", "") or die(mysql_error()); 
mysql_select_db("bloggers", $con) or die(mysql_error()); 

$data = "Select * from accountprofile where Username = '" . $_SESSION['Sess_user'] . "' and Password = '" . $_SESSION['Sess_pass'] . "'";

$result = mysql_query($data);
$row = mysql_fetch_assoc($result); // You're only getting one row, no need to loop.
mysql_close($con);

 ?>

<div class="title" style="font-size: 36px;">
    <?php echo $row['Fname']; ?>
</div>

<强> FYI ： Please, don't use mysql_* functions in new code。它们不再被维护and are officially deprecated。请参阅red box？转而了解prepared statements，并使用PDO或MySQLi - this article将帮助您确定哪个。如果您选择PDO here is a good tutorial。

Answer 2

变量$ row只是循环范围。你在里面创建这个变量，它只存在于那里。

Answer 3

@ user2047260记得要显示的变量必须在while循环中，下面是代码试试吧

 <?php
    session_start();
    session_name();

    $con = mysql_connect("localhost", "root", "") or die(mysql_error()); 
    mysql_select_db("bloggers", $con) or die(mysql_error()); 


        $data = "Select * from accountprofile where Username = '" . $_SESSION['Sess_user'] . "' and Password = '" . $_SESSION['Sess_pass'] . "'";

    $result = mysql_query($data);

    while($row = mysql_fetch_array($result)) {
       $fname = $row['Fname'];
       $username = $row['Username'];
       $password =$row['Password'];
      ?>
      <div class="title" style="font-size: 36px;">
        <?php echo $fname;
          mysql_close($con);
        }
        ?>
    </div>



        enter code here

Answer 4

如果您在echo语句中回显变量，则可以执行以下操作：

echo "foo " . $bar . "!";

这称为连接字符串。

如果您希望以后再使用它，可以在while循环中使用以下内容将所有结果放入数组中

while($row = mysql_fetch_array($result)) {
   $useLaterOn[] = $row;
  }

希望这有助于：）

如何在div中回显php变量

4 个答案: