<?php


$site_name = $_SERVER['HTTP_HOST'];
$url_dir = "http://".
$_SERVER['HTTP_HOST'].dirname($_SERVER['PHP_SELF']);
$url_this =  "http://".$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'];


$upload_dir = "upload_files/";
$upload_url = $url_dir."/upload_files/";
$message ="";


//create upload_files directory if not exist
//If it does not work, create on your own and change permission.
if (!is_dir("upload_files")) {
         die ("upload_files directory doesn't exist");


}

if ($_FILES['userfile']) {
         $message = do_upload($upload_dir, $upload_url);
}

else {
         $message = "Invalid File Specified.";
}

print $message;
function do_upload($upload_dir, $upload_url) {


        $temp_name = $_FILES['userfile']['tmp_name'];
         $file_name = $_FILES['userfile']['name'];
         $file_type = $_FILES['userfile']['type'];
         $file_size = $_FILES['userfile']['size'];
         $result    = $_FILES['userfile']['error'];
         $file_url  = $upload_url.$file_name;
         $file_path = $upload_dir.$file_name;


        //File Name Check
     if ( $file_name =="") {
         $message = "Invalid File Name Specified";
         return $message;
     }
     //File Size Check
     else if ( $file_size > 500000) {
         $message = "The file size is over 500K.";
         return $message;
     }


    $result  =  move_uploaded_file($temp_name, $file_path);
     $message = ($result)?"File url <a href=$file_url>$file_url</a>" :
               "Somthing is wrong with uploading a file.";


    return $message;


}

?>
<table><TR><TD>
<form name="upload" id="upload" ENCTYPE="multipart/form-data"
method="post">
   Upload Image<input type="file" id="userfile" name="userfile">
   <input type="submit" name="upload" value="Upload">


</form>