<?php
$dt=ucol($_POST);
echo json_encode($dt);

function ucol($js){
  global $ar,$db;
  $dt=array();
  //$dt['param']=$js;

  $sql="SELECT * from `".$js['tbl']."` where `id`='".$js['id']."'";
  //$dt['sql'][1]=$sql8;
  $res=mysqli_query($db,$sql);
  if(mysqli_num_rows($res)==1){
    $r=mysqli_fetch_assoc($res);

    $udt=array(
      $js['col']=>$js['val'],
    );
    Update($db,$js['tbl'],$udt,"`".$js['wc']."`=".$js['id'],0);
    $dt['status']=true;
  } else {
    $dt['error']=true;
    $dt['message']="Data not found";        
  }

  return $dt;
  $db->close();
}
?>