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PHP - Expire Session
when user login to his account, I want to expire session after 5 minutes Similar Tutorialshow can i set a session to expire after a set amount of time, say 1 hour. i'm using the following code to create my session, but i dont know what i need to add to make it expire $_SESSION['pageviewsid'.$id] = $new; $new is the result from a calculation and $id is the page id from the URL using $_GET i make a site and give a option to uploaded a file but i want to give time period so that there is time limit for downloading after that time interval file is not able to download, so please help me how can i do that. thanks Hi All, if we read performance rules given by yahoo they suggest to add expire header for JS and css files. my question is how to add expire header for different JS and CSS files. reference URL :- http://developer.yahoo.com/performance/rules.html#expires Assume I have a php page that have 5 js and 2 css it may be anywhere in html document for eg <!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=windows-1252" /> <script language="javascript" type="text/javascript" src="test.js"> </script> <title>Untitled Document</title> </head> <body> <script language="javascript" type="text/javascript" src="test2.js"> </script> SOME HTNl CONTENT <script language="javascript" type="text/javascript" src="test3.js"> </script> <script language="javascript" type="text/javascript" src="test4.js"> </script> <img src="1.gif"> </body> </html> My question is how I will add expire header in every JS, CSS and images. I have a restriction:- I cannot use ob_start() for the output buffering. As far as I can see, this code: Code: [Select] $this->_licence_expires = date('Y/m/d', mktime(0, 0, 0, date("m"), date("d")-1, date("Y"))); results in accounts expiring 1 year from today, right? How can I change it so that it will result in expiry 9 months from today? TIA did some searching on the internet and didnt find much. i have created an online classifieds website and want all created listings to expire and delete after a certain amount of days. honestly i have no idea where to start with this implementation. cookies were the only thing that even crossed my mind... any ideas? btw each listing is stored in a table called ob_listings Assume this project is to create an online lottery system. Is there a way to limit the user entering the numbers after a certain time? E.g. The Draw will be at 9.00PM 05 November 2010 - Submitting the numbers will expire after 8.00PM 05 November 2010. (so any user tries to submit numbers after 8.00PM 05 Nov 2010 will not be entered in to the MySQL db). Any help is highly appreciated. I am trying to create an index page which contains registration and login field the problem that i get is on successful login a warning is displayed session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at C:\xampp\htdocs\Eventz.com\index.php:116) in C:\xampp\htdocs\Eventz.com\index.php on line 235 This is the login part of my index.php this tag is inside an html table below the login form I also have a registration form and its php code above the login form Code: [Select] <?php if (isset($_REQUEST['pass'])) { $id=$_POST['id']; $pass=$_POST['pass']; $conn =mysql_connect("localhost","root",""); if (!$conn) { die('Could not connect: ' . mysql_error()); } /* checking connection....success! */ $e=mysql_select_db('test', $conn); if(!$e) { die(''.mysql_error()); } else { echo 'database selected successfully'; } if (isset($_REQUEST['id']) || (isset($_REQUEST['pass']))) { if($_REQUEST['id'] == "" || $_REQUEST['pass']=="") { echo "login fields cannot be empty"; } else { $sql=mysql_query("Select email,password from login where email='$id' AND password='$pass'"); $count=mysql_num_rows($sql); if($count==1) /* $count checks if username and password are in same row */ { session_start(); $_SESSION['id']=$id; echo "</br>Login Successful</br>"; } else { echo "</br>invalid</br>"; echo "please try to login again</br>"; } } } } ?> Any help or suggestion would be appreciated I am having trouble resolving an error. Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/s519970/public_html/header.php:27) in /home/s519970/public_html/admin/login.php on line 2 What I can gather is I can't use "header (Location: 'admin.php')" after i've used session_start(). I have tried to replace the header (Location: 'admin.php') with this: echo "<script>document.location.href='admin.php'</script>"; echo "<script>'Content-type: application/octet-stream'</script>"; I've been trying to read up on solutions but haven't been able to get it sorted. If anyone can offer some advice that would be greatly appreciated as im new to php. Code: [Select] <?php session_start(); if(isset($_SESSION['user'])) echo "<script>document.location.href='admin.php'</script>"; echo "<script>'Content-type: application/octet-stream'</script>"; ?> <div id="loginform"> <form action="dologin.php" method="post"> <table> <tr> <td><span>Username:</span></td> <td><input type="text" name="username" /></td> </tr> <tr> <td><span>Password:</span></td> <td><input type="password" name="password" /></td> </tr> <tr> <td colspan="2" align="right"><input type="submit" name="login" value="Login" /></td> </tr> </table> </form> </div> I have tried using require_once('yourpage.php'); before my <head></head> tags in the header document where I've specified the html information but this doesn't seem to work. I've been advised to use ob_start("ob_gzhandler"); but I am not sure how to implement this. Any advice is greatly appreciated! in this page http://maximaart.com/newscp/ i have this problem Code: [Select] Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/maximasy/public_html/newscp/index.php:1) in /home/maximasy/public_html/newscp/index.php on line 2 my source code is <?php session_start(); include_once("config.php"); include_once("functions.php"); $errorMessage = ''; if (isset($_POST['txtUserId']) && isset($_POST['txtPassword'])) { if ($_POST['txtUserId'] === "$user" && $_POST['txtPassword'] === "$pass") { // the user id and password match, $_SESSION['basic_is_logged_in'] = true; require("main.php"); exit;?> hi everyone. i'm wondering what the best way is to create a session variable and pass it to an iframe. i need to do something along these lines, but it doesn't seem to pass the ID. Any hints on how i should accomplish this? Code: [Select] session_start(); $_SESSION['ID']=$_GET['ID']; // id from previous page $ID=session_id(); <iframe src="iframepage.php?ID=<?php echo $ID; ?>" style="width:680px; height:200px;" noresize="noresize" frameborder="0" border="0" scrolling="Yes" allowtransparency="true" /> </iframe> I'm making a simple login system with MySQL and PHP (very simple, I'm just starting with PHP). The MySQL portion is done, but I need to ensure only people who are logged in can see certain content. To check if people are logged in, my website checks that they have the $_SESSION['user'] variable set. If it is set, then it lets them continue through the website, if not, it tells them to login. Is that enough security, or can people simply inject a session cookie into their browser to spoof that they are logged in? My idea was to generate a session key cookie when they login (just a random string of letters and numbers) and store that in the database, then on every page, check to make sure their session key is the same thing that's in the database. Is this necessary? It seems expensive. Evening! I've been iffing and ahhing over this and well im not too sure, hence the post. Code: [Select] // Redirects if there is no session id selected and echos the error on the previous page if(!isset($_GET['get']) || ($_GET['getget'])){ header("Location: #.php?error"); } So it should simply check if get is set if it isnt then see if getget is set? If not redirect and show the error. Now ive tried it and even when get/getget is set it still redirects, probably something silly. Care to share anyone? Harry. Just curious how other people feel about this. I am working on an application where a lot of info is pulled from MySQL and needed on multiple pages.
Would it make more sense to...
1. Pull all data ONCE and store it in SESSION variables to use on other pages
2. Pull the data from the database on each new page that needs it
I assume the preferred method is #1, but maybe there is some downside to using SESSION variables "too much"?
Side question that's kind of related: As far as URLs, is it preferable to have data stored in them (i.e. domain.com/somepage.php?somedata=something&otherdata=thisdata) or use SESSION variables to store that data so the URLs can stay general/clean (i.e. domain.com/somepage.php)?
Both are probably loaded questions but any possible insight would be appreciated.
Thanks!
Greg
Edited by galvin, 04 November 2014 - 10:30 AM. Is there anyway to work out the age of a session, i.e the time that has elapsed since it was created? Cheers Pls tell me what is wrong? <?PHP include("dba.php"); function hvataj ($trazi, $id) { $upit = mysql_query ('select * from administrator where member_id = '.$id.''); return ( $row = mysql_fetch_assoc ($upit) ) ? $row[$trazi] : mysql_error (); } ?> I have parse error here on this line when I want to echo it: <?PHP echo "<img src='images/korisnik_slike/".hvataj('slika',$_SESSION['member_id']."' />"; ?> Hi, I am trying to get the value of a session veriable and if the variable contains a certain word it will show an error message, else just continue as normal. if (isset($_POST['selectroom'])) {$_SESSION['room'] = $_POST['selectroom'];} if (!isset($_SESSION['room'])) $room = "RoomNameA"; else $room = $_SESSION['room']; Please Advise, - Stuart Hi, I have a PHP page that includes this JS: Code: [Select] <script type="text/javascript"> AC_FL_RunContent( 'codebase','http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,28,0','width','465','height','80','class','FlashBorder','src','img/skype_banner_eng','quality','high','pluginspage','http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash','movie','img/skype_banner_eng' ); //end AC code </script> skype_banner_eng is a flash movie in English. I need to get this movie to change to a different languagdepending on the language variable loaded. I have done this with jpg images by doing this: Code: [Select] header_<?php echo ($_SESSION['session_idioma']);?>.jpg but whenI try to do the same within the JS it doesn't work....any ideas ? Thanks Code: [Select] <?php session_start(); if(!session_is_registered(myusername)){ header("location:./default.php"); } ?> My session works fine but I am just wondering how I can echo the current sessions username? Thanks Hello I keep having this issue with sessions. I have an login feature on my website that uses sessions. When i do like this: 1. Login 2. close browser 3. open browser again 4. try to log in It fails, actually nothing happens, so I manually need to go to logout.php to reset and then I can log in again. Why is this happening and how do i solve it? |
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