Php Login With Ajax Submit Issue.--Noobie

DefunctExodus · August 26, 2007

This may be a very basic issues but i do not have very much experiance with ajax and php,

What i am trying to do is create a login feild on my website, Once the user clicks login if they are successfull the login feild will be replaced with the conent that the user is authroized to see.

I have already created my Login script and everything but calling it with ajax....is proving to be a headache

Any help would be greatly appretiated.

Here is the Code i have done up for my login

Login Index. Contains Ajax Code (I did not write it) as well as the php includes for the login

<script type="text/javascript">
var bustcachevar=1 //bust potential caching of external pages after initial request? (1=yes, 0=no)
var loadedobjects=""
var rootdomain="http://"+window.location.hostname
var bustcacheparameter=""

function ajaxpage(url, containerid){
var page_request = false
if (window.XMLHttpRequest) // if Mozilla, Safari etc
page_request = new XMLHttpRequest()
else if (window.ActiveXObject){ // if IE
try {
page_request = new ActiveXObject("Msxml2.XMLHTTP")
} 
catch (e){
try{
page_request = new ActiveXObject("Microsoft.XMLHTTP")
}
catch (e){}
}
}
else
return false
page_request.onreadystatechange=function(){
loadpage(page_request, containerid)
}
if (bustcachevar) //if bust caching of external page
bustcacheparameter=(url.indexOf("?")!=-1)? "&"+new Date().getTime() : "?"+new Date().getTime()
page_request.open('GET', url+bustcacheparameter, true)
page_request.send(null)
}

function loadpage(page_request, containerid){
if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1))
document.getElementById(containerid).innerHTML=page_request.responseText
}

function loadobjs(){
if (!document.getElementById)
return
for (i=0; i<arguments.length; i++){
var file=arguments[i]
var fileref=""
if (loadedobjects.indexOf(file)==-1){ //Check to see if this object has not already been added to page before proceeding
if (file.indexOf(".js")!=-1){ //If object is a js file
fileref=document.createElement('script')
fileref.setAttribute("type","text/javascript");
fileref.setAttribute("src", file);
}
else if (file.indexOf(".css")!=-1){ //If object is a css file
fileref=document.createElement("link")
fileref.setAttribute("rel", "stylesheet");
fileref.setAttribute("type", "text/css");
fileref.setAttribute("href", file);
}
}
if (fileref!=""){
document.getElementsByTagName("head").item(0).appendChild(fileref)
loadedobjects+=file+" " //Remember this object as being already added to page
}
}
}

</script>
<?php
define("IN_APP",0);
require("app.php");

if(!$blnLoggedin){

include("javascript:ajaxpage('pages/login.php','colTwo');");

} else {

include("javascript:ajaxpage('pages/home.php','colTwo');");

}
?>

Here is the Page that should be loaded Upon opening up index assuming the user has not been logged in

<?php
if(!defined("IN_APP")){ die(); }

if(isset($_POST['Submit'])){

//Get variables
$strUsername = $_POST['username'];
$strPassword = $_POST['password'];

//Check login
if(!$cMySQL->doLogin($strUsername, $strPassword)){

	$strError = "Username/password combination incorrect.";

} else {

	header("Location: index.php");

}

}

?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Login</title>
</head>

<body>
<form method="post" action="index.php">
<table width="250" border="0" cellspacing="2" cellpadding="0" style="border: 1px solid black;">
  <tr style="background-color:#000000; color:#FFFFFF;">
    <th colspan="2" scope="col">Login</th>
  </tr>
  <tr>
    <td>Username:</td>
    <td><input name="username" type="text" id="username" /></td>
  </tr>
  <tr>
    <td>Password:</td>
    <td><input name="password" type="password" id="password" /></td>
  </tr>
  <tr>
    <td colspan="2" align="center"><?php if(isset($strError)){ echo("<font color=\"red\">".$strError."</font><br/>"); } ?><input type="submit" name="Submit" value="Login" /></td>
  </tr>
</table>
</form>
</body>
</html>

If the user has been authenticated or succesfully loged in with the previous script it would them show them there page

Sorry if i was not supposed to all that code. I just hitting my head against the wall trying to get this to work so.

ReDucTor · August 28, 2007

<?php
define("IN_APP",0);
require("app.php");

if(!$blnLoggedin){

include("javascript:ajaxpage('pages/login.php','colTwo');");

} else {

include("javascript:ajaxpage('pages/home.php','colTwo');");

}
?>

This is ALL wrong!

PHP is server side

Javascript and HTML is client side

include("javascript:..") wont work, thats only going to come back file not found.

I think what your after is not aJax but just a different menu for logged in and not logged in.

<html>
<head><title>My Website</title></head>
<body>
Menu: <?php
if($bLoggedIn)
  include('loggedin_menu.php');
else
  include('loggedout_menu.php');
?>
<br>
Page Body
</body>

This will depending on the bLoggedIn variable show a different output for a menu.

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Php Login With Ajax Submit Issue.--Noobie

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