ragazzi ho provato e ritentato ma non ci riesco mi esce sempre l'errore del

$file_name | errore di upload

aiutatemi vi prego questo è il codice dell'invio delle immagini... l'errore in questo caso dovrebbe trovarsi a questo punto nel

$copy = ImageJpeg($dst_img,"7case/immobili/",100);

aiutatemi vi prego eccovi tutto il codice

Codice PHP:
$uploadNeed = $_POST['uploadNeed'];
for($x=0;$x<$uploadNeed;$x++){
$file_name = $_FILES['uploadFile'. $x]['name'];
$file_name = stripslashes($file_name);
$file_name = str_replace("'","",$file_name);
if($_FILES['uploadFile'.$x]['size'] > 500432){
    echo "$file_name | il file è maggiore di 500 KB";
    }else{
         if ((strstr($_FILES['uploadFile'.$x]['type'],"jpeg") || strstr($_FILES['type']['tmp_name'],"jpg"))) {}
         $path_to_img=$_FILES['uploadFile'.$x]['tmp_name'];
         if($path_to_img){}else{echo "errore path_to_img";}
         $imagehw = getimagesize($path_to_img);
         if($imagehw){}else{echo "imagehw
";}
         $final_width=800;
         $final_height=(800*$imagehw[1])/$imagehw[0];
         if($final_height){}else{echo"errore final_height
";}   
         $dst_img=imagecreatetruecolor($final_width,$final_height);
         if($dst_img){}else{echo "errore dst_img
";}
         $src_img=imagecreatefromjpeg($path_to_img); 
         if($src_img){}else{echo "errore src_img
";}
         $ImageCopyResampled = imagecopyresampled($dst_img,$src_img,0,0,0,0,$final_width,$final_height,imagesx($src_img),imagesy($src_img));
         if($ImageCopyResampled){}else{echo "errore ImageCopyResampled
";}
                $copy = ImageJpeg($dst_img,"7case/immobili/",100);    
                          //$copy = copy($_FILES['uploadFile'. $x]['tmp_name'],$file_name);
                        if($copy){
                            echo "$file_name | upload avvenuto con successo!
";
                            }else{
                                echo "$file_name | errore di upload!
";
                                }    
}