PHP Undefined index error $_FILES?

Question

I am new to PHP and am following a tutorial on YouTube. I have everything working in this file, except for the file uploading, any help would be appreciated. Here is the e

Answer 1

For uploading files, you must use the enctype in form tag.

<form enctype="multipart/form-data" action='register.php' method='post'>

Answer 2

this is a 1 year ago Post but you may still interested .. Check this option in PHP.ini : enable_post_data_reading=off It should be : on otherwise the $_FILES will be empty forever Whether PHP will read the POST data This option is enabled by default. Most likely, you won't want to disable this option globally. It causes $_POST and $_FILES to always be empty.

Answer 3

first: try to strict programming

error_reporting(E_ALL | E_STRICT);

also you must use isset for check is index for array available or not

if (isset($_POST['submitbtn']) && isset($_FILES['avatar'])) {
     // ...
}

also check php configuraion

file_uploads    "1"
upload_max_filesize     "2M"
post_max_size   "8M"
max_file_uploads    20

post max size must be larger than upload max file size.

also as guys said check form enctype

Answer 4

You should add form attribute enctype="multipart/form-data" to upload files