move_uploaded_file failure

Question

Can someone help me understand why this is returning false?

if ((move_uploaded_file($_FILES[$field][\'tmp_name\'], $path))) {

As in, potent

Answer 1

Loïc Février, thank you, you've saved me a lot of time!

Here is my part... printing possible errors during upload.

First create directory Uploader/UploadedFiles Then use code below...

$destination=$_SERVER[DOCUMENT_ROOT]."/Uploader/UploadedFiles/" . $_FILES["file"]["name"];

if(move_uploaded_file($_FILES["file"]["tmp_name"],  $destination)){
   echo ("Stored in".$_SERVER[DOCUMENT_ROOT]."/Uploader/UploadedFiles/".$_FILES["file"]["name"]);
}else{
   $html_body = '<h1>File upload error!</h1>';
   switch ($_FILES[0]['error']) {
   case 1:
      $html_body .= 'The file is bigger than this PHP installation allows';
      break;
   case 2:
      $html_body .= 'The file is bigger than this form allows';
      break;
   case 3:
      $html_body .= 'Only part of the file was uploaded';
      break;
   case 4:
      $html_body .= 'No file was uploaded';
      break;
   default:
      $html_body .= 'unknown errror';
   } 
   echo ($html_body);
}

Answer 2

Check:

enctype="multipart/form-data"

Inside the form itself, without it file upload won't work at all.

Answer 3

I have checked the variables

Do not check variables but check error messages.
It's the only thing you need.
Add these lines at the top of your code

ini_set('display_errors',1);
error_reporting(E_ALL);

and see what it says.
If move_uploaded_file failed, it will always raise an error with detailed explanation.
You won't believe it, but reading error messages is way more efficient way to find a problem than guesswork you tried before

I can't believe noone mentioned it already.

Answer 4

Did you edit your php.ini to make sure upload_tmp_dir points to a temporary directory?