Uploaden en resizen

<? 
if ($_FILES['upload']['type'] !== 'image/pjpeg'){ 
echo"<br><br><center>Onbekend bestandstype. Alleen JPG-bestanden worden geaccepteerd!<br><br><a href=upload_form.html>Ga terug en probeer opnieuw</a></b></center>"; 
exit; 
} 
if (!empty($_FILES['upload']['name'])) { 
function NumGen( $length ) { 
$vandaag = getdate(); 
$randnum = $vandaag['yday']; 
   for ( $i = 0; $i < $length; $i++ ) 
       $randnum .= rand( 0, 9 ); 

   return $randnum; 
} 
$cod= NumGen(5); 
$cod1= "_"; 
$code= $cod.$cod1; 
$up_file=$_FILES['upload']['tmp_name'];  
     $srcimage = imagecreatefromjpeg($up_file);  
     $width = imageSX($srcimage);  
     $height = imageSY($srcimage);  
if($width <= 800 && $height <= 600){ 
$t_width=$width; 
} else { 
if ($height < $width){ 
$t_width = 800; 
} 
else { 
$t_width = 600; 
} 
}  
     $newh1= $height / $width; 
     $newh2= $newh1 * $t_width; 
     $destimage = imagecreatetruecolor($t_width,$newh2);  
     imagecopyresampled($destimage,$srcimage,0,0,0,0,$t_width,$newh2,$width,$height);  
     ob_start(); 
     ImageJPEG($destimage,'',100); 
        $buffer = ob_get_contents(); 
     ob_end_clean(); 
     $filename='files/'.$code.'pic.jpg'; 
     $handle = fopen($filename, 'ab');  
     fwrite($handle, $buffer);  
     fclose($handle); 
      

} else { 
    die("Geen filenaam geselecteerd."); 
} 
?> 
 
En het script wat ik tot nu toe al had:

<?php 
include ("config.php");
include ("functions.php"); 

CheckLogin();

if(isset($_POST['avatar'])) 
                $upload_dir = $_SERVER['DOCUMENT_ROOT'] . "avatar/"; 
                $avatar     = $_FILES['upload']['name']; 
                $extensie   = $_FILES['upload']['type']; 
                $size        = $_FILES['upload']['size']; 
                $ex_avatar    = $_POST['ex_avatar']; 
                 
                if ($_FILES['upload']['type'] == "image/jpeg" || $_FILES['upload']['type'] == "image/pjpeg" || $_FILES['upload']['type'] == "image/gif" || $_FILES['upload']['type'] == "image/pjpeg" || $_FILES['upload']['type'] == "image/x-png") 
                { 
                    if($size > 108000) 
                    { 
                      exit("Uw foto mag niet groter zijn dan 8 Kb");          
                    } 
                    if (!move_uploaded_file($_FILES['upload']['tmp_name'], $upload_dir . $_FILES['upload']['name'])) 
                    {          
                      exit (" avatar niet upgeload"); 
                    } 
                $insert = mysql_query ("UPDATE `WNP_nickname` SET `avatar` = '$avatar', `ex_avatar` = '$ex_avatar' WHERE `nickname` = '".$_SESSION['nickname']."'") or die (mysql_error()); 
                 
                   echo "Avatar toegevoegd";   
                } 
                else 
                { 
                    echo "Verkeerde extensie"; 
                }        
} 
if(!isset($_POST['avatar'])) 
{ 
?>

<? 
if ($_FILES['upload']['type'] !== 'image/pjpeg'){ 
echo"<br><br><center>Onbekend bestandstype. Alleen JPG-bestanden worden geaccepteerd!<br><br><a href=upload_form.html>Ga terug en probeer opnieuw</a></b></center>"; 
exit; 
} 
if (!empty($_FILES['upload']['name'])) { 
function NumGen( $length ) { 
$vandaag = getdate(); 
$randnum = $vandaag['yday']; 
   for ( $i = 0; $i < $length; $i++ ) 
       $randnum .= rand( 0, 9 ); 
 
   return $randnum; 
} 
$cod= NumGen(5); 
$cod1= "_"; 
$code= $cod.$cod1; 
$up_file=$_FILES['upload']['tmp_name'];  
     $srcimage = imagecreatefromjpeg($up_file);  
     $width = imageSX($srcimage);  
     $height = imageSY($srcimage);  
if($width <= 800 && $height <= 600){ 
$t_width=$width; 
} else { 
if ($height < $width){ 
$t_width = 800; 
} 
else { 
$t_width = 600; 
} 
}  
     $newh1= $height / $width; 
     $newh2= $newh1 * $t_width; 
     $destimage = imagecreatetruecolor($t_width,$newh2);  
     imagecopyresampled($destimage,$srcimage,0,0,0,0,$t_width,$newh2,$width,$height);  
     ob_start(); 
     ImageJPEG($destimage,'',100); 
        $buffer = ob_get_contents(); 
     ob_end_clean(); 
     $filename='files/'.$code.'pic.jpg'; 
     $handle = fopen($filename, 'ab');  
     fwrite($handle, $buffer);  
     fclose($handle); 
 
 
} else { 
    die("Geen filenaam geselecteerd."); 
} 
?> 
 
En het script wat ik tot nu toe al had:
 
<?php 
include ("config.php");
include ("functions.php"); 
 
CheckLogin();
 
if(isset($_POST['avatar'])) 
                $upload_dir = $_SERVER['DOCUMENT_ROOT'] . "avatar/"; 
                $avatar     = $_FILES['upload']['name']; 
                $extensie   = $_FILES['upload']['type']; 
                $size        = $_FILES['upload']['size']; 
                $ex_avatar    = $_POST['ex_avatar']; 
 
                if ($_FILES['upload']['type'] == "image/jpeg" || $_FILES['upload']['type'] == "image/pjpeg" || $_FILES['upload']['type'] == "image/gif" || $_FILES['upload']['type'] == "image/pjpeg" || $_FILES['upload']['type'] == "image/x-png") 
                { 
                    if($size > 108000) 
                    { 
                      exit("Uw foto mag niet groter zijn dan 8 Kb");          
                    } 
                    if (!move_uploaded_file($_FILES['upload']['tmp_name'], $upload_dir . $_FILES['upload']['name'])) 
                    {          
                      exit (" avatar niet upgeload"); 
                    } 
                $insert = mysql_query ("UPDATE `WNP_nickname` SET `avatar` = '$avatar', `ex_avatar` = '$ex_avatar' WHERE `nickname` = '".$_SESSION['nickname']."'") or die (mysql_error()); 
 
                   echo "Avatar toegevoegd";   
                } 
                else 
                { 
                    echo "Verkeerde extensie"; 
                }        
} 
if(!isset($_POST['avatar'])) 
{ 
?>