使用變量PHP SQL更新發布到形式

Question

我有一種形式，需要從變量另一種形式，像這樣：

$employeeid = $_POST['modifyid']; 
$fname = $_POST['modifyfn']; 
$lname = $_POST['modifyln']; 
$staffno = $_POST['modifysn']; 
$empusername = $_POST['modifyeu']; 

</br> 
<td><form action="empmodify.php" method="post"> 
    <?php echo 
    "<div class='form-group'> 
      <tr><td>ID:</td><td> 
       <input type='text' class='form-control' name='modid' value='" . $employeeid . "'/> 
      </td></tr> 
     </div> 

    <div class='form-group'> 
      <tr><td>First Name:</td><td> 
       <input type='text' class='form-control' name='modfn' value='" . $fname . "'/> 
      </td></tr> 
     </div> 

     <div class='form-group'> 
      <tr><td>Surname Name:</td><td> 
       <input type='text' class='form-control' name='modln' value='" . $lname . "'/> 
      </td></tr> 
     </div> 

     <div class='form-group'> 
      <tr><td>Staff number:</td><td> 
       <input type='text' class='form-control' name='modsn' value='" . $staffno . "'/> 
      </td></tr> 
     </div> 

     <div class='form-group'> 
      <tr><td>Username:</td><td> 
       <input type='text' class='form-control' name='modeu' value='" . $empusername . "'/> 
      </td></tr> 
     </div> 


    <button type='submit' class='btn btn-default'>Modify this Employee</button>"?> 
      </form></td> 

    </div> 

這些變量已經在數據庫中 - 這部分工作。我想要的是，當用戶點擊提交時，它會更新記錄，並在此表單中更改其中的任何內容。這裏是我的empmodify.php：

$employeeid = $_POST['modid']; 
    $fname = $_POST['modfn']; 
    $lname = $_POST['modln']; 
    $staffno = $_POST['modsn']; 
    $empusername = $_POST['modeu']; 


    $result = mysql_query("UPDATE employee SET fname = '$fname', lname = '$lname', staffno = '$staffno', empusername = '$empusername' WHERE employeeid = '$employeeid'"); 

我已經嘗試了這麼多的事情與我的變量，但update語句似乎並不奏效。我試過單引號，雙引號，發帖，並連接它們，但沒有任何想法？ :)

Answer 1

嘗試用這樣的事情：

$result = mysql_query('UPDATE employee SET fname = "'.$fname.'", lname = "'.$lname.'", staffno = "'.$staffno.'", empusername = "'.$empusername.'" WHERE employeeid = "'.$employeeid.'"');