can help me to intergarate this in php

a friend of mine . coded a php remote uploade script for me .

it is very simple . upload your image .than it will remote upload to tinypic.com ...

it is amazing . try demo

http://image.test.wdus.org/

<?php
function checklink($filename, $filesize, $filetype) {
$filename2 = explode(".", $filename);
foreach ($filename2 as $key => $value) {
$filename2 = $value;
 }
if ($filename2 == $filename) {
$error = "File Is Without Extention";
 }
$filname3 = str_replace($filename2, md5("runcode"), "jpg gif png jpeg bmp");
if ($error == "") {
if (preg_match("/".md5("runcode")."/i", $filname3)) {
  }else{
 $error = ".$filename2 Is Inavlid Type ";
  }
 }
if ($error == "") {
if (substr($filetype, 0, 5) == "image") {
  }else{
 $error = "Uploaded File Is Not Image";
  }
 }
if ($error == "") {
$size = "2000";
$size = $size*1000;
if ($size > $filesize) {
  }else{
 $error = "Your File Size Is Large Than 2 Mb";
  }
 }
if ($error != "") {
return $error;
 }else{
return "yes";
 }
}
function im2link($data) {
    $ed = explode('>', $data);
    foreach ($ed as $key => $value) {
        if (substr(trim($value), 0, 3) == '<in') {
            unset($el); $e1 = explode('name="pic"', $value);
            unset($z1);
            if (isset($e1[1])) { $z1 = explode("\"", $e1[1]); $picid = $z1[1]; }
            
            unset($el); $e1 = explode('name="ival"', $value);
            if (isset($e1[1])) { $z1 = explode("\"", $e1[1]); $picserver = $z1[1]; }
            
        }

    }
    if (isset($picid) && isset($picserver)) { return "http://i".$picserver.".tinypic.com/".$picid; }
}
if (isset($_POST['MAX_FILE_SIZE'])){
    $err = checklink(strtolower($_FILES['file']['name']), $_FILES['file']['size'], $_FILES['file']['type']);
if ($err == "yes") {
      $file=$_FILES['file']['tmp_name'];
      $eer = explode('.', $_FILES['file']['name']);
      $ch = curl_init('http://s4.tinypic.com/upload.php');  
      curl_setopt($ch, CURLOPT_POSTFIELDS, array('domain_lang'=>"en",'action'=>'upload','MAX_FILE_SIZE'=>'200000000','the_file'=>"@$file",'description'=>'','file_type'=>'image','dimension'=>'1600'));
      curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
      $postResult = curl_exec($ch);
      curl_close($ch);
      if (im2link($postResult) != '') { die('<input name="piclink" onclick="this.select()" value="[IMG]'.im2link($postResult).'.'.$eer[count($eer)-1].'[/IMG]" size="41"><br><a href="'.$_SERVER['SCRIPT_NAME'].'">Upload More</a>'); }else{ die('<a href="'.$_SERVER['SCRIPT_NAME'].'">Try Again</a>'); }
 }else{
 die($err.'<br><a href="'.$_SERVER['SCRIPT_NAME'].'">Try Again</a>');
 }
}
?>
<form enctype="multipart/form-data" action="<?php echo $_SERVER['SCRIPT_NAME']; ?>" method="post" >
      <input type="hidden" name="MAX_FILE_SIZE" value="200000000" />
      Choose an image to upload:<br>
      <input name="file" type="file" size="29" /><br />
      <input type="submit" value="Upload File" />
</form>

PHP:

now my question is can any body integrate this watermark code in this script .

<?php  

header('content-type: image/jpeg');  

$watermark = imagecreatefrompng('watermark.png');  
$watermark_width = imagesx($watermark);  
$watermark_height = imagesy($watermark);  
$image = imagecreatetruecolor($watermark_width, $watermark_height);  
$image = imagecreatefromjpeg($_GET['src']);  
$size = getimagesize($_GET['src']);  
$dest_x = $size[0] - $watermark_width - 5;  
$dest_y = $size[1] - $watermark_height - 5;  
imagecopymerge($image, $watermark, $dest_x, $dest_y, 0, 0, $watermark_width, $watermark_height, 100);  
imagejpeg($image);  
imagedestroy($image);  
imagedestroy($watermark);  

?>

PHP:

actually i read this from site point complete tutorial at this site



http://www.sitepoint.com/article/watermark-images-php/

for some reason i don't want to bother my friend again ......

please help .because i am newbie ..... no idea how i can done ?