#phpsession

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Session in PHP

What is a session?

In general, session refers to a frame of communication between two medium. A PHP session is used to store data on a server rather than the computer of the user. Session identifiers or SID is a unique number which is used to identify every user in a session based environment. The SID is used to link the user with his information on the server like posts, emails etc.

Starting a PHP Session

Before you can store any information in session variables, you must first start up the session. To begin a new session, simply call the PHP session_start() function. It will create a new session and generate a unique session ID for the user. The PHP code in the example below simply starts a new session The session_start() function first checks to see if a session already exists by looking for the presence of a session ID. If it finds one, i.e. if the session is already started, it sets up the session variables and if doesn't, it starts a new session by creating a new session ID. You must call the session_start() function at the beginning of the page i.e. before any output generated by your script in the browser, much like you do while setting the cookies with setcookie() function.

Storing and Accessing Session Data

You can store all your session data as key-value pairs in the $_SESSION superglobal array. The stored data can be accessed during lifetime of a session. Consider the following script, which creates a new session and registers two session variables. To access the session data we set on our previous example from any other page on the same web domain — simply recreate the session by calling session_start() and then pass the corresponding key to the $_SESSION associative array. The PHP code in the example above produce the following output. Hi, John Doe

Destroying a Session

If you want to remove certain session data, simply unset the corresponding key of the $_SESSION associative array, as shown in the following example: However, to destroy a session completely, simply call the session_destroy() function. This function does not need any argument and a single call destroys all the session data. Every PHP session has a timeout value — a duration, measured in seconds — which determines how long a session should remain alive in the absence of any user activity. You can adjust this timeout duration by changing the value of session.gc_maxlifetime variable in the PHP configuration file (php.ini). Read the full article

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In this article, we'll learn about PHP Sessions. What is PHP Session? $_SESSION is a special array used to store...

[simplywebstuff]

Sessions In PHP. Everything You Need To Know

Sessions In PHP. Everything You Need To Know In this article you will learn what sessions are, how to create and how to create and how to destroy a session in PHP. #web #webdev #php #phpsession #createsession #destroysession #phpbeginner #accesssession

Not that you learn what are cookies, how to create them and how to delete them, it’s time to move even further and talk about sessions. In this article you will learn what sessions are, how to create and how to destroy a session in PHP. What Is Session In PHP If you red last post on this blog, you know that you can store data using cookies. But it has some security problems since cookies are…

[ryadel]

Anuko TimeTracker Login error - How to Fix

If you don't know Anuko TimeTracker, and you are looking for a good web-based time tracking application that you can install on premise (i.e. without getting poor by paying a monthly fee to Timely, Wrike and the likes), you should definitely give it a try: Anuko Time Tracker is a simple, easy to use, open source, web-based time tracking application written in PHP that allows you to track the time that employees, colleagues, or teammates spend working on projects and tasks. It needs a web server such as Apache, IIS, etc. to run on, and a database to keep the data in, such as MariaDB or MySQL. Before proceeding, it's worth noting that we are not affiliated to Anuko in any way: we just love the software and use it a lot, and also suggest it to all our client and customers that manifest the aforementioned requirements. We also developed a custom mod to allow an Excel export (CSV-based, but it works!) for the timesheet, which we'll be talking about in a upcoming post.

The Problem

Despite its greatness, Anuko has a small yet nasty issue: its login / auth implementation is quite convoluted and tends to give opaque signs - or, to better say that, no signs at all - whenever there are authentication issues. When this happens, you will often experience the login page reloading itself with no apparent reason: you type the (correct) username and password, hit login and get the reload, without significant errors.

The Anuko Time Tracker login page: if you're reading this post, there's a good chance you've already started to hate it. That's quite frustrating, isn't it? Luckily enough, we got such issue covered. Before giving out the actual solution, let's try to understand what happens under the hood. The issue is caused by an odd behaviour within the ttAccessAllowed function, which is declared in the WEB-INF/lib/common.lib.php page (line 372 or so): if you look there, you'll see that there is a  hard redirect to the login page if the $auth->isAuthenticated() method returns FALSE. This is what actually happens: The user gets firstly redirected to the login.php page (see above screenshot), where he can fill up the login form by typing its username and password. The user types the credentials and hit the Login button, thus issuing a POST request. The application gets the POST request and, after a small bunch of high-level checks, will redirect the request to one of the starting pages, depending on the user's rights: for example, if the authenticating user is a standard user, it will be sent to the time.php page. The time.php page calls the ttAccessAllowed function to ensure that the authenticated user has the proper rights to access its content... and there goes the issue! The ttAccessAllowed function calls the $auth->isAuthenticated() method, which returns FALSE, and therefore redirects the user to the login.php page: since the login page gets reloaded from scratch, being at the end of a request redirect cycle, it won't be showing any error message, warning or anything else. Now, the fact that we're getting no significative error message is, at least partly, a PHP/HTTP design issue: however, the real culprit - which causes the $auth->isAuthenticated() method to return FALSE - often lies elsewhere: let's see where.

The Solution

The causes of this problem are almost always related to a wrong configuration of the PHP session folder - the FileSystem directory where PHP stores the session files. Most of the times we're talking of permission issues: more specifically, the session folder must be owned by the PHP process owner, i.e. the one specified in the relevant PHP configuration files, depending on the PHP implementation used by the web server: for mod_php, see /etc/httpd/conf.d/php.conf for php-fpm, see /etc/php-fpm.d/*.conf The session folder is defined by the session.save_path setting within the php.ini file, and it's usually /var/lib/php/session/; however, just to be sure, it can be easily checked by performing the following steps: Create a phpinfo.php file in the Anuko TimeTracker folder; Fill it with the following PHP code one-liner: Open a web browser and navigate to that page. You will be able to see the php.ini file path and the session.save_path setting value in a single shot. Once you've successfully determined where the path actually is, you can go there and change the relevant permissions by setting the owner and the group accordingly. As soon as you do that, your issue should be fixed: PHP will be able to create its session files, and you'll be able to login to Anuko Time Tracker again!

Conclusion

That's it, at least for now: we sincerely hope that this post will help other system administrators and/or php developers struggling to make their web application login page working again. See you next time, and... happy tracking! Read the full article

[thecampcodes]

How to Create Login and Logout Page with Session and Cookies in PHP

This tutorial will give you an idea on how to use the stored cookie to log in, and I've added a "logout" function that destroys both session and cookie. Creating a Database First, we're going to create a database that contains our data. 1. Open phpMyAdmin. 2. Click databases, create a database and name it as "cookie". 3. After creating a database, click the SQL and paste the below code. See image below for detailed instruction. CREATE TABLE `user` ( `userid` INT(11) NOT NULL AUTO_INCREMENT, `username` VARCHAR(30) NOT NULL, `password` VARCHAR(30) NOT NULL, `fullname` VARCHAR(60) NOT NULL, PRIMARY KEY (`userid`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1; Inserting Data into a Database Next, we insert users into our database. This will be our reference when we login. 1. Click the database the we created earlier. 2. Click SQL and paste the code below. INSERT INTO `user` (`username`, `password`, `fullname`) VALUES ('neovic', 'devierte', 'neovic devierte'), ('lee', 'ann', 'lee ann'); Creating a Connection Next step is to create a database connection and save it as "conn.php". This file will serve as our bridge between our form and our database. To create the file, open your HTML code editor and paste the code below after the tag. Creating a Login Form Next is to create our login form. In this form, I've added a code that if ever there's a cookie stored, it will show in the login inputs. #clearsessioninphp #createaloginandlogoutpagewithsessionandcookiesihphp #createsessionphp #createsessionvariable #destroysessionphp #differencebetweensessionandcookiesinphpw3schools #echosessionvariable #howdoiaddasessiontomyloginpage #howdoikeepauserloggedinphp #howdoistorelogintimeandlogouttimeforeveryuserinphpandmysql #howtocreateasessioninphp #howtocreatesessioninphp #howtodestroyaparticularsessionvariableinphp #howtogetdatausingsessioninphp #howtomaintainloginsessioninphp #howtomanagesessioninphp #howtostoredatainsessioninphp #howtostorelastlogindetailsindatabase #howtostoresessionvalueindatabaseinphp #howtostoreuseridinsessionphp #howtostoreusernameandpasswordincookiesinphp #howtostorevalueinsessioninphp #howtoupdatedatausingsessioninphp #howtoupdatesessionvalueinphp #howtousecookiesinphpforlogin #howtousesessionidtologin #howtousesessioninphp #howtousesessioninphpforloginandlogout #howtousesessioninphpforloginform #howtousesessioninphpforloginformwithexample #issetsessionphp #javascriptvariablevaluestoredinphpsession #loginandlogoutinphp #loginandlogoutusingsessioninphpandmysqli #loginforminphpusingcookies #loginformusingsessionandcookiewithremembermeinphp #loginpageinphpwithdatabasesourcecode #loginphp #loginsystemphpsourcecode #logoutbuttonphp #logoutcodeinphpwithsession #logouthtmlsourcecode #logoutinphp #logoutinphpusingsession #logoutinphpw3schools #logoutpageinphp #logoutpageinphpwithsession #logoutphp #logoutsessionphp #methodsession #php_session #php7session #php7sessions #phpcheckifsessionstarted #phpcookieloginsystem #phpendsessionlogout #phplogin #phploginexample #phploginform #phploginpagewithsessionexample #phploginscript #phploginsession #phploginsessionwithdatabase #phploginsystem #phplogintemplate #phploginwithoutsession #phplogoutbutton #phplogoutscript #phpresumesession #phpsecurecookielogin #phpsession #phpsessionandcookies #phpsessionarray #phpsessionauthentication #phpsessionclasstutorial #phpsessioncookie #phpsessiondata #phpsessiondestroy #phpsessiondestroylogout #phpsessionend #phpsessionexample #phpsessionexamplelogin&amplogout #phpsessionexamplelogin&amplogoutpdf #phpsessionexamples #phpsessionformultipleusers #phpsessionid #phpsessionidcookie #phpsessionlogin #phpsessionloginw3schools #phpsessionmanagementexample #phpsessionmanagementusingdatabase #phpsessionnotworking #phpsessionnotworkingbetweenpages #phpsessionstart #phpsessiontimeout #phpsessiontutorial #phpsessionusername #phpsessionvariable #phpsessionvariables #phpsession_start #phpsession_startnotworking #phpsessions #phpsessionsandcookies #phpsessionstutorial #phpstartsession #phpusersession #php7session #sessionarrayinphp #sessioncloseinphp #sessioncountinphp #sessiondestroy #sessiondestroyinphp #sessiondestroyphp #sessioninphpexample #sessioninphpexampleforloginandlogout #sessioninphpexampleforloginandlogoutwithoutdatabase #sessionmanagementinphpforlogin #sessionmessageinphp #sessionobjectphp #sessionphp #sessionstartphp #sessionunsetinphp #sessionvariableinphp #sessionvariableshtml #sessionvariablesphp #sessionsphp #setsessionvariablephp #simpleloginforminphp #startsessionphp #statemanagementinphp #storeformdatainsessionphp #unsetsessioninphp #unsetsessionphpw3schools #usesessioninphp #userandadminloginwithsessionphp #whatiscookiesinphp #whatissessioninphp #whatissessiontrackinginphp #whatisthecorrectandsafesecurewaytokeepauserloggedincookiessessionphp&amp&ampmysql Read the full article

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TUTORIAL.

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MUSEO Y CONFERENCIA.

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ESCUELA RURAL

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VISITA A LA ESCUELA RURAL!!!