Someone

<!-- The data encoding type, enctype, MUST be specified as below -->
<form enctype="multipart/form-data" action="index2.php" method="POST">
    <!-- MAX_FILE_SIZE must precede the file input field -->
    <input type="hidden" name="MAX_FILE_SIZE" value="30000" />
    <!-- Name of input element determines name in $_FILES array -->
    Send this file: <input name="userfile" type="file" />
    <input type="submit" value="Send File" />
</form>

<?php
// In PHP versions earlier than 4.1.0, $HTTP_POST_FILES should be used instead
// of $_FILES.

$uploaddir = '/home/mark36ph/public_html/filez/';
$uploadfile = $uploaddir . basename($_FILES['userfile']['name']);



/*function  image_valid($type)
{
    $file_types  = array(  
    'image/pjpeg'     => 'jpg',
    'image/jpeg'     => 'jpg',
    'image/jpeg'     => 'jpeg',
    'image/gif'     => 'gif',
    'image/X-PNG'    => 'png',
    'image/PNG'         => 'png',
    'image/png'     => 'png',
    'image/x-png'     => 'png',
    'image/JPG'     => 'jpg',
    'image/GIF'     => 'gif',
//    'image/bmp'     => 'bmp',
//    'image/bmp'     => 'BMP',
    );
}
*/

function image_valid($type, $byExtension = false) {
   $file_types  = array(
      'image/pjpeg',
      'image/jpeg',
      'image/jpg',
      'image/gif',
      'image/x-png',
      'image/png'
   );
 
   $file_extensions = array('jpg','jpeg','gif','png');
 
   if ($byExtension) {
      return in_array(strtolower($type),$file_extensions);
   }
   else {
      return in_array(strtolower($type),$file_types);
   }
}


echo '<pre>';
if $image_valid($_FILES['userfile']['type']) {
	echo "twat";
}

else if (move_uploaded_file($_FILES['userfile']['tmp_name'], $uploadfile)) {
    echo "File is valid, and was successfully uploaded.\n";
}


print "</pre>";

?>