注意：未定义的索引：C:\wamp\www\var\filter\filter.php中的名称

我犯了一个错误

Notice: Undefined index: name in C:\wamp\www\var\filter\filter.php

这是我的密码

<?php

$dbHost = 'localhost'; // usually localhost
$dbUsername = 'root';
$dbPassword = 'xxxxxx';
$dbDatabase = 'filter';
$db = mysql_connect($dbHost, $dbUsername, $dbPassword) or die ("Unable to connect to Database Server.");
mysql_select_db ($dbDatabase, $db) or die ("Could not select database.");

$name = $_POST['name'];


$sql_selectsupplier = "SELECT * FROM contact";

print $sql_selectsupplier;

$result1 = mysql_query($sql_selectsupplier);

 if ($name !=""){
                      $sql_selectsupplier.=" AND name = '".$name."'";     

            }


while($rows=mysql_fetch_assoc($result1))
{

           echo '<tr>';

echo ' 

        <td class="edit name '.$rows["id"].'" >'.$rows["name"].'</td>

        </tr>';


}

?>

使用ISSET

试试这个

  if(isset($_POST['name'])){
    $name = $_POST['name'];
    $sql_selectsupplier = "SELECT * FROM contact";
    print $sql_selectsupplier;
    $result1 = mysql_query($sql_selectsupplier);
    if ($name !=""){
      $sql_selectsupplier.=" AND name = '".$name."'";     
    }
    while($rows=mysql_fetch_assoc($result1)){
      echo '<tr>';
      echo '<td class="edit name '.$rows["id"].'" >'.$rows["name"].'</td></tr>';
    }
  } else {
   echo "name is not set";
  }

到

---

用户isset（$\u POST['name']）看起来您的$\u POST['name']未设置（即，它是空的）。查看您的帖子是否正确提交。谢谢，它的显示名称未设置。请查看我的更新编码检查我编辑的答案

  if(isset($_POST['name'])){
    $name = $_POST['name'];
    $sql_selectsupplier = "SELECT * FROM contact";
    print $sql_selectsupplier;
    $result1 = mysql_query($sql_selectsupplier);
    if ($name !=""){
      $sql_selectsupplier.=" AND name = '".$name."'";     
    }
    while($rows=mysql_fetch_assoc($result1)){
      echo '<tr>';
      echo '<td class="edit name '.$rows["id"].'" >'.$rows["name"].'</td></tr>';
    }
  } else {
   echo "name is not set";
  }

    data: dataString,

    data: {
    name: name
            },