Mysql num rows without submitting form - php

Question

I have a jquery php mysql query, which works fine, but before my form being submitted, I would like to tell my visitors how many results will they receive. For example: Show results (5).
Could you tell me an easy way of doing that please?
I would really appreciate it.
edit: my ajax looks like the following:
<script language="javascript" type="text/javascript">
<!--
//Browser Support Code
function ajaxFunction(){
var ajaxRequest; // The variable that makes Ajax possible!
try{
// Opera 8.0+, Firefox, Safari
ajaxRequest = new XMLHttpRequest();
}catch (e){
// Internet Explorer Browsers
try{
ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
}catch (e) {
try{
ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
}catch (e){
// Something went wrong
alert("Your browser broke!");
return false;
}
}
}
// Create a function that will receive data
// sent from the server and will update
// div section in the same page.
ajaxRequest.onreadystatechange = function(){
if(ajaxRequest.readyState == 4){
var ajaxDisplay = document.getElementById('ajaxDiv');
ajaxDisplay.innerHTML = ajaxRequest.responseText;
}
}
// Now get the value from user and pass it to
// server script.
var bedno = document.getElementById('bedno').value;
var district = document.getElementById('district').value;
var loc = document.getElementById('location').value;
var queryString = "?bedno=" + bedno ;
queryString += "&district=" + district + "&location=" + loc;
ajaxRequest.open("GET", "ajax-example.php" +
queryString, true);
ajaxRequest.send(null);
}
//-->
</script>

Answer 1

Your AJAX is right.
In your ajax-example.php file fetch the result using your parameters.
And echo the result.
example
$st = mysqli_query($link, "your query");
$result = mysqli_num_rows($st);
echo $result;