Linux, Apache, MySQL, PHP

var result = XMLHttpRequestObject.responseText;
document.getElementById("div").innerHTML = result;

var result = XMLHttpRequestObject.responseText;
if (result.$one == 1)
{
    somecodeHere;
}

result.$one 

$variable_name = $_GET["req"];
if ($variable_name == "one")
   echo $one;
/// etc.

var url = "/cms/_sql/sendPassword.php?req=one"

var result = XMLHttpRequestObject.responseText;
if (result == '1')
{    somecodeHere;
}

function checkRemForm(email, div)
{

 createObject();

if (XMLHttpRequestObject)
{
var url = "/cms/_sql/sendPassword.php?email=" +email.value;
		
XMLHttpRequestObject.open('GET', url, true);

XMLHttpRequestObject.onreadystatechange = function()
{
   if (XMLHttpRequestObject.readyState == 4 && XMLHttpRequestObject.status == 200)
   {
	var result = XMLHttpRequestObject.responseText;
	if (result == 1)
	{
	   targetDiv.innerHTML = result;
	}
	else
	   targetDiv.innerHTML = "no";				
   }
}
XMLHttpRequestObject.send(null);
}

$email = $_GET['email'];
print $email;
$one = 1;

?>

if (isset($_GET["email"]))   // if the email var was passed
{
   include('dbconn.php')    //  connect etc. to your mysql - i have this stuff in dbconn.php
   $query="select  email,blabla,etc  FROM MyTable  WHERE email='".$_GET["email"]."'";
   $result=mysql_query($query) or die('0');
   if (mysql_num_rows($result)>0)   // if at least one record with this email
       echo '1';           //  then send 1
   else
       echo '0';           //  else send 0
   mysql_free_result($result);
}

if (in result $one equals 1)
{
  do this;
}

XMLHttpRequestObject.responseText

var result = XMLHttpRequestObject.responseText;
if (result==1)
  document.getElementById(div).style.visibility='hidden';
else
  //  do something else

var result = XMLHttpRequestObject.responseText;

targetDiv.innerHTML = result; //Output any error messages printed in the php script

if (targetDiv.innerHTML == "") // If there arent any error messages then do this code
{
   // Some code
}