Php 注意：未定义的索引：myfile

我试图建立一个上传表单，我收到了通知 （！）注意：第19行C:\wamp32\www\game\upload.php中的未定义索引：myfile 我使用的代码是：

    <?php
    include("config.php");
    session_start();

    $_SESSION['uname']="123";

    $uname = $_SESSION['uname'];
    $upload = <<<EOT
    Welcome, $uname<p>
    Upload your image:
    <form action='upload.php' method='POST' ectype='multipart/form-data'>
    File:<input type='file' name='myfile'><input type='submit' name='submit'        value='Upload!'>
    </form>
    EOT;

    if (isset($_POST['submit']))
    {
        //get file attributes
        $name = $_FILES['myfile']['name'];
        $tmp_name = $_FILES['myfile']['tmp_name'];

        if ($name)
   {
    //start upload process
        $location = "upload/$name";
        move_uploaded_file($tmp_name, $location);

        $query = mysql_query("UPDATE users SET imagelocation='$location' WHERE uname='$uname'");

        die("Your avatar has been uploaded! <a href='view.php'>Home</a>");
    }
    else
    die("Please select a file!");
    }

    echo ($upload);
    ?>

应该是

enctype='multipart/form-data'

<form action='upload.php' method='POST' enctype='multipart/form-data'>

enctype='multipart/form data'
修复表单标记（enctype）中的拼写错误，然后重试：）
enctype='multipart/form-data'

<form action='upload.php' method='POST' enctype='multipart/form-data'>