imagecopyresampled whats wrong with this code?

[Looktrne]

I am trying to add imagecopyresampled to my photo upload page so it scaled all images that are too big to 800 by 600

 

 

THE CODE FOLLOWS

 

 

    if ($size[0] > $max_image_width || $size[1] > $max_image_height){$nrs=1;} else {$nrs=0;}

if(man_MIME2Ext($_FILES["filename_1"]['type']) != "")

{

$file_source = $member_code."_$number.".man_MIME2Ext($_FILES["filename_1"]['type']);

upload_file($_FILES["filename_1"]['tmp_name'], "photos/$file_source", man_MIME2Ext($_FILES["filename_1"]['type']));

if ($nrs=1){

 

// ## Will this next line properly asign the imagefile? ###

 

  $image = "photos/$file_source";

 

 

  header("Content-type: image/jpeg");

     

    if(substr($image, -3)=="jpg" || substr($image, -3)=="JPG"){$im = imagecreatefromjpeg($image);}

    elseif(substr($image, -3)=="gif" || substr($image, -3)=="GIF"){$im = imagecreatefromgif($image);}

    elseif(substr($image, -3)=="png" || substr($image, -3)=="PNG"){$im = imagecreatefrompng($image);}

   

 

 

        $x = 800;

        $y = 600;

        $yyy=0;

        $xxx=0;

        $imw = imagecreatetruecolor($x,$y);

 

   

    imagecopyresampled($imw, $im, 0,0,0,0,$x,$y,imagesx($im), imagesy($im));

}

// Do I need an output file in here somewhere?

 

please some suggestions on how to fix this up