PHP HTML: File upload not working

Question

I can't believe I have to ask this, but for some reason my file isn't working. It's called ajax.php (though don't mind the name), and here is the exact code:

<?php
error_reporting(-1);

print_r($_POST);
print_r($_FILES);
?>

<form action="ajax.php" method="post" enctype="multipart/form-data">
    <input type="hidden" name="MAX_FILE_SIZE" value="30000" />
    <input type="text" name="first" value="Bob" />
    <input type="text" name="middle" value="James" />
    <input type="text" name="last" value="Smith" />
    <input type="file" name="something" />
    <input type="submit" value="Submit" />
</form>

When I submit without attaching a file it prints data in the arrays. When I submit WITH a file no arrays populate.

What obvious thing am I missing???

Without file

Array ( [MAX_FILE_SIZE] => 30000 [first] => Bob [middle] => James [last] => Smith )
Array ( [something] => Array ( [name] => [type] => [tmp_name] => [error] => 4 [size] => 0 ) )

With File

Array ( )
Array ( )

EXPECTED with File

Array ( [MAX_FILE_SIZE] => 30000 [first] => Bob [middle] => James [last] => Smith )
Array ( [something] => Array ( [name] => sample.jpg [type] => image/jpg [tmp_name] => whatever.jpg [error] => 0 [size] => 1248 ) )

UPDATE

It appears to be working on another server, it's DEFINITELY some configuration with my WAMP, meaning my question was incorrectly asked and therefore I'm closing it. Apologies to anyone who wasted time on my stupidity.

Answer 1

This appears to be a configuration problem. I'd say the post_max_size is too small. This would explain why the $_POST superglobal is empty when a file is uploaded. From the manual...

If the size of post data is greater than post_max_size, the $_POST and $_FILES superglobals are empty.

You need to set this value greater than upload_max_filesize. For example, one of my servers has...

file_uploads=On
upload_max_filesize=12M
post_max_size=20M

Answer 2

If you are trying to send uploaded file trough Ajax, you can check my question and answer. Here you can find all the javascript code. How to send data to server while upload file?

You can send your data in 2 times. First upload your file, then inside upload complete, Second put your ajax to send your data, without file upload.

Answer 3

The issue is with MAX_FILE_SIZE

 <input type="hidden" name="MAX_FILE_SIZE" value="30000" />

The MAX_FILE_SIZE hidden field measured in bytes, so either replace it with some higher value or remove it.

Try it with this

      <form action="ajax.php" method="post" enctype="multipart/form-data">
       <input type="hidden" name="MAX_FILE_SIZE" value="2597152" />
       <input type="text" name="first" value="Bob" />
       <input type="text" name="middle" value="James" />
       <input type="text" name="last" value="Smith" />
       <input type="file" name="something" />
        <input type="submit" value="Submit" />
     </form>

OUTPUT:

  Array
   (
          [MAX_FILE_SIZE] => 2597152
          [first] => Bob
          [middle] => James
          [last] => Smith
   )
 Array
 (
    [something] => Array
      (
           [name] => Desert.jpg
           [type] => image/jpeg
           [tmp_name] => D:\wamp\tmp\php3191.tmp
           [error] => 0
           [size] => 845941
     )

  )

I will suggest you to remove MAX_FILE_SIZE, because it not good practice to interest on user for input. better if you use SERVER side validation for this.