If you are unable to move a file using PHP's move_uploaded_file, add the following code to the PHP file which uploads the file.

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

echo '<pre>';
print_r($_FILES);
echo '</pre>';

Following are common errors, and the solutions for the errors.

Warning: move_uploaded_file(uploads/1.png): failed to open stream: Permission denied in D:\path\to\image_upload.php on line 28

Warning: move_uploaded_file(): Unable to move 'D:\php\upload_tmp\phpEE37.tmp' to 'uploads/1.png' in D:\path\to\pbsmart\image_upload.php on line 28

1. Give IUSR the write permission to the directory the files are being uploaded to server-side. The directory is D:\php\upload_tmp\.
2. Give IUSR the write permission to the final upload directory. The directory is D:\ISCCSites\share