Cookies and Sessions

@BelrickNov 07.2010 — #Here is my simple script which uses cookies.

I cannot for the life of me figure how you would store login in details using sessions that of course expire upon close.

Perhaps I have my wires crossed?

Anywho heres client side login in form with remember me option

[code=html]<!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 Form</title>
 <link href="loginmodule.css" rel="stylesheet" type="text/css" />
 
 <script type="text/javascript">
 function delete_cookie (name, path)
 {
 if (name != "login")
 {
 // Build expiration date string:
 var expiration_date = new Date ();
 expiration_date . setYear (expiration_date . getYear () - 1);
 expiration_date = expiration_date . toGMTString ();
 
  // Build set-cookie string:
  var cookie_string = escape (name) + "=; expires=" + expiration_date;
  if (path != null)
   cookie_string += "; path=" + path;
 
  // Delete the cookie:
  document . cookie = cookie_string;
 }
 }
 
 function delete_all_cookies (path)
 {
 // Get cookie string and separate into individual cookie phrases:
 var cookie_string = "" + document . cookie;
 var cookie_array = cookie_string . split ("; ");
 
  // Try to delete each cookie:
  for (var i = 0; i < cookie_array . length; ++ i)
  {
   var single_cookie = cookie_array [i] . split ("=");
   if (single_cookie . length != 2)
   continue;
   var name = unescape (single_cookie [0]);
   delete_cookie (name, path);
  }
 }
 
 
 function getCookie(c_name)
 {
 if (document.cookie.length>0)
 {
 c_start=document.cookie.indexOf(c_name + "=");
 if (c_start!=-1)
 { 
 c_start=c_start + c_name.length+1; 
 c_end=document.cookie.indexOf(";",c_start);
 if (c_end==-1) c_end=document.cookie.length;
 return unescape(document.cookie.substring(c_start,c_end));
 } 
 }
 return "";
 }
 
 function setCookie(c_name,value,expiredays)
 {var exdate=new Date();exdate.setDate(exdate.getDate()+expiredays);
 document.cookie=c_name+ "=" +escape(value)+
 ((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
 }
 
 function rememberlogin()
 {
 login = document.getElementById('login').value;
 password = document.getElementById('password').value;
 rememberme = document.getElementById('rememberme').checked;
 
 if (rememberme)
 {
 setCookie('remembermelogin',login,365);
 setCookie('remembermepassword',password,365);
 setCookie('rememberme',rememberme,365);
 }
 else
 {
 delete_all_cookies ();
 setCookie('rememberme',rememberme,365);
 }
 
 }
 
 function rememberedlogin()
 {
 
 rememberme = getCookie('rememberme');
 
 if (rememberme == 'true')
 {
 login = getCookie('remembermelogin');
 password = getCookie('remembermepassword');
 
 
 document.getElementById('login').value = login;
 document.getElementById('password').value = password;
 document.getElementById('rememberme').checked=true;
 }
 
 }
 
 
 </script>
 
 
 </head>
 <body onload="rememberedlogin();">
 
 <p>&nbsp;</p>
 <form id="loginForm" name="loginForm" method="post" action="login-exec.php">
 <table width="380" border="0" align="center" cellpadding="2" cellspacing="0">
 <tr>
 <td colspan="2"><?php echo $message; ?></td>
 </tr>
 <tr>
 <td colspan="2">&nbsp;</td>
 </tr>
 <tr>
 <td width="132"><b>Login</b></td>
 <td width="268"><input name="login" type="text" class="textfield" id="login" size='36'/></td>
 </tr>
 <tr>
 <td>(email address)</td>
 <td>&nbsp;</td>
 </tr>
 <tr>
 <td><b>Password</b></td>
 <td><input name="password" type="password" class="textfield" id="password"  size='36'/></td>
 </tr>
 <tr>
 <td></td>
 <td>&nbsp;</td>
 </tr>
 <tr>
 <td>&nbsp;</td>
 <td>
 <input type="submit" name="Submit" value="Login" onclick="rememberlogin();"/>
 <span>Remember Me<input type="checkbox" name="rememberme" value="Yes" id="rememberme" /></span>
 </td>
 </tr>
 </table>
 </form>
 </body>
 </html>
 
 
 [/code]

@BelrickNov 07.2010 — #Also you may be interested in this little tip.

In the login exec.php you can have a bunch of reasons as to why the login will fail.

eg:

[code=php]
  $qry="SELECT * FROM users WHERE email = '$login' AND password='$password'";
 $result=mysql_query($qry);
 //Check whether the query was successful or not
 if($result) {
 //all good
 }
 else{ //no good
 header("location: login-form.php?reason=ne");
 }
 
 [/code]

So within the login form script above you can add this in the body

[code=php]
  <?php
 
 @$reason=$_GET["reason"];
 $message = "&nbsp;";
 
 switch ($reason){
 case "ne":
 $message = "Sorry but we are having server issues, please try again later";
 break;
 //Have as many failed to login errors you like from incorrect login or login already in use etc
 }
 ?>
 
 echo $message; //Add this anywhere in the form page you like
 
 [/code]

And now upon login failure you can display reasons why without a seperate login-failed.php page

Cookies and Sessions

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