$ _FILES [ '照片']; 是空的

Question

I was trying to make an image upload script but $_files['photo']; is empty all the way.

$_FILES['photo']['name'];
$_FILES['photo']['size'];
$_FILES['photo']['type'];
$_FILES['photo']['tmp_name'];
$_FILES['photo']['error'];

When I echo them out, they all return absolutely nothing.

if($_FILES['photo']['name'])
{

if(!$_FILES['photo']['error'])
{
    $new_file_name = strtolower($_FILES['photo']['name']); 
    if($_FILES['photo']['size'] > (1024000)) 
    {
        $valid_file = false;
        $msg = 'Oops!  Your file\'s size is to large.';
        echo $msg;
    }

    if($valid_file)
    {
        move_uploaded_file($_FILES['photo']['tmp_name'], 'images/thumbnails/'.$new_file_name);
        $msg = 'Congratulations!  Your file was accepted.';
        echo $msg;
    }
}

else
{
    $msg = 'Ooops!  Your upload triggered the following error:  '.$_FILES['photo']['error'];
    echo $msg;
}
}

Did I do something wrong maybe?

<form action='?p=post' method='POST'>
            <input type='file' name='photo' size='25' />
            <input type='submit' value='Posten' name='submit' /><br />
            </form>

Answer 1

Your form is missing an essential part => enctype="multipart/form-data" add it in your form.

<form action='?p=post' method='POST' enctype='multipart/form-data'>

• The data encoding type is required when uploading files.

Consult:

• http://php.net/manual/en/features.file-upload.post-method.php