rev A

<?php /***** index.php *****/ ?>
<?php
$jml=isset($_GET['jml'])?(!empty$_GET['jml']?$_GET['jml']:2):2;
?>
<script language='javascript' src='ajax.js'></script>
<form>
<input type='hidden' name='jml' value='<?php echo $jml;?>'>
<?php
for($n=1;$n<=$jml;$n++)
{
echo "<div class='textbox'>"
     ."<input type='text' name='nim$n' placeholder='masukkan nim' id='searching$n' onkeyup='nim(this)' />"
     ."<div id='pencariannim'></div>
     ."</div>";
}
?>
</form>


<?php /*******ajax.js*******/ ?>
//pencarian nim
function nim(myparam){
  var obj=myparam.nextSibling;
  var url='proses_ajax_ceknim.php?searching='+myparam.value;
  while(obj.nodeType!=1){
    obj=obj.nextSibling;
  }
  xmlhttp.open("GET", url);
  xmlhttp.onreadystatechange = function() {
    if ( xmlhttp.readyState == 4 && xmlhttp.status == 200 ) {
      obj.innerHTML = xmlhttp.responseText;
    } else {
      obj.innerHTML = "<div align ='center'><img src='img/loading.gif' alt='Loading' />Loading...!!!</div>";
    }
  }
  xmlhttp.send(null);
}


<?php /**** Proses_ajax_ceknim.php ***/ ?>
<?php
$key=$_GET['searching'];
$result=mysql_query("select * from tblmhs where nim like '%$key%'",$koneksi);
$get_pages=mysql_num_rows($result);
if ($get_pages){
  $row=mysql_fetch_array($result);
  $nim=$row['nim'];
  echo"benar";
}
else
{
  echo"<br><b>Belum ada data!!</b>";
}
?>