Tryit Editor v2.3

PHP Source:

<!DOCTYPE html>
<html>
<head>
<script>
function showHint(str) {
   if (str.length == 0) {
   document.getElementById("txtHint").innerHTML = "";
   return;
   } else {
   var xmlhttp = new XMLHttpRequest();
   xmlhttp.onreadystatechange = function() {
   if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
   document.getElementById("txtHint").innerHTML = xmlhttp.responseText;
   }
   }
   xmlhttp.open("GET", "gethint.php?q="+str, true);
   xmlhttp.send();
   }
}