no idea how to implant resize image coding into exsisting script. Help!

[$php_mysql$]

one one could guide me through on how to add

 

this bit of coding from 

http://www.white-hat-web-design.co.uk/articles/php-image-resizing.php

 

<?php
   include('SimpleImage.php');
   $image = new SimpleImage();
   $image->load('picture.jpg');
   $image->resize(250,400);
   $image->save('picture2.jpg');
?>

 

to my this bit of coding

 

$target = "images_thumbs/";
$randomnum=rand(0000,9999);
$target = $target.getnick_username($username).$randomnum;
$target = $target.basename($_FILES['ad_image']['name']) ;
$ok=1;

if (file_exists("images_thumbs/" . $_FILES["ad_image"]["name"]))
      {
echo "<p align=\"center\">";
      echo $_FILES["file"]["name"] . "Oops file name already exists<br/> kindly rename your picture and upload again. <br/>";

echo "<a href=\"index.php?action=main\">Home</a>";
echo "</p>";    
}else{


    $image = new SimpleImage();
$image->load($imagepath);
$image->resize(204,250);
$image->save($_FILES["image"]["name"]);

//If everything is ok we try to upload it
else{
if(move_uploaded_file($_FILES['ad_image']['tmp_name'], $target)){
echo "<p align=\"center\">";

echo "The file ". basename( $_FILES['uploadedfile']['name']). " Picture uploaded successfully.<br/><br/><b>$target <br/>";
echo "<a href=\"index.php?action=main\">Home</a>";
echo "</p>";
}
else{
echo "<p align=\"center\">";

echo "Sorry, there was a problem uploading your file.<br/>";
echo "</p>";
}
}

[WebStyles]

it seems you didn't include the simpleImage class in your file:

include('SimpleImage.php');