<form method= "post"  enctype= "multipart/form-data"  name= "formf"  action= "admin.php?action=upload?=32 &extraupload=image&page= 3 ">
Файл изображения <INPUT type= "file"  name= "file"  class= "mainoption" >
<INPUT type= "submit"  value= "Принять"  class= "mainoption" >
</form>	

if (is_uploaded_file($_FILES['file']['tmp_name'])) {move_uploaded_file($_FILES['file']['tmp_name'],  "$image.jpg" );
}

action= "admin.php?action=upload&image=2 &extraupload=image&page= 0 ">