php - How to check is someone is online? -



php - How to check is someone is online? -

so have made simple log in scheme in php how go on making function on php check if online can done in php

login system

<?php if (empty($_post) === false) { $username = $_post['username']; $password = $_post['password']; if (empty($username) === true || empty($password) === true) { $errors[] = 'please come in username , password'; } else if (user_exists($username) === false) { $errors[] ='sorry user entered dose not exist'; } else if (user_active($username) === false) { $errors[] ='you have not activated business relationship please check email activate account'; } else { if (strlen($password) > 32){ $errors[] ='passwords long !'; } $login = login($username, $password); if ($login === false) { $errors[] ='incorrect username or password'; } else { $_session['user_id'] = $login; header('location: index.php'); exit(); } } } else { $errors[] = 'no info received'; } echo output_errors($errors); ?>

you can utilize sessions this:

http://php.net/manual/en/book.session.php

simple usage of sessions:

// start session if(!session_id()) session_start(); $_session["the_user"] = true; // check if session live if(!empty($_session["the_user"])) echo "user online !"; else echo "user isn't online!"; // delete session unset($_session["the_user"]);

note simple usage of session, session live if user went of site. few minutes. (session's expire time)

php mysql

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