Using foreach to fetch form data

foreach($_POST as $formLable=>$formValue){
  if(!empty($formValue)){
    if(is_array($formValue)){
        $formValue=dbSafe(implode(",", $formValue));
    }else{
        $formValue=dbSafe($formValue);
    }
     ${$formLable}  = $formValue;
  }else {
    ${$formLable}  = "";
  }
}