<?php
if(isset($_POST["username"]) && $_POST["username"] != "")
{
$username= $_POST['username'];
if (strlen($username) < 4) {
echo '4 - 15 characters please';
}
if (is_numeric($username[0])) {
echo 'First character must be a letter';
}
}
?>
php code not working: please help me validation using java script or ajax
e<script type="text/javascript" language="javascript">
function callme()
{
var showme = document.getElementById("show");
var user = document.getElementById("uname").value;
//for check new browser show ajax from
if(user!=="")
{
showme.innerHTML=' loading.....';
var hr = new XMLHttpRequest()
{
hr.open("post","index.php",true);
hr.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
hr.readystatechange=function()
{
if(hr.readystate== 4 && hr.status==200) {
showme.innerHTML= hr.responseText;
}
}
var v="username="+ user;
hr.send(v);
}
}
}
</script>
<body>
<span>username:</span>
<input type="text" name="uname" id="uname" onBlur="callme();"/>
<div id="show"></div>
</body>
all code working fine only php code not working please help me when we enter some text in textbox only loading..... any type of validation are not showing ...
