用php更新mysql数据库(Update mysql database with php)

 我想更新我的数据库和这个代码在另一个表上工作良好，但在这里我有一个错误，我看到这个消息： 
 
 
 
 您的SQL语法有错误; 查看与MySQL服务器版本对应的手册，以便在第4行的“WHERE id ='588”附近使用正确的语法 
 
 
<?php
$sel_item = "SELECT * FROM `employees` where id=".$_GET['emp_id'];
$done_item = mysql_query($sel_item);
$get_item = mysql_fetch_array($done_item);

if(isset($_POST['edit']) ){
    $upd= "UPDATE `employees` SET 
    `emp_no`='".$_POST['name']."',
    WHERE `id`='".$_POST['id']."";
    $do_upd = mysql_query($upd) or die(mysql_error());
}
?>


<form action="" method="post" enctype="multipart/form-data">

         <table class="append-row" width="100%" border="0" bgcolor="#006699"  height="60px" align="left" 
        style="padding:0 30px;">
          <tr>

           <td><input type="text" name="name" id="name" placeholder="name"  value="<? php echo $get_item['emp_no'];?>"></td>
          <input type="hidden" name="id" id="id"    value="<?php echo $get_item['id'];?>" >

          <td><input type="submit" name="edit" id="edit" value="edite"></td>    

      </tr>

        </table>

     </form>

I want to update my database and this code in working good on another table but here i have an error and i see this message:
 
 
 
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE id='588'' at line 4
 
 
<?php
$sel_item = "SELECT * FROM `employees` where id=".$_GET['emp_id'];
$done_item = mysql_query($sel_item);
$get_item = mysql_fetch_array($done_item);

if(isset($_POST['edit']) ){
    $upd= "UPDATE `employees` SET 
    `emp_no`='".$_POST['name']."',
    WHERE `id`='".$_POST['id']."";
    $do_upd = mysql_query($upd) or die(mysql_error());
}
?>


<form action="" method="post" enctype="multipart/form-data">

         <table class="append-row" width="100%" border="0" bgcolor="#006699"  height="60px" align="left" 
        style="padding:0 30px;">
          <tr>

           <td><input type="text" name="name" id="name" placeholder="name"  value="<? php echo $get_item['emp_no'];?>"></td>
          <input type="hidden" name="id" id="id"    value="<?php echo $get_item['id'];?>" >

          <td><input type="submit" name="edit" id="edit" value="edite"></td>    

      </tr>

        </table>

     </form>

原文：https://stackoverflow.com/questions/16819754