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Making a Timeout Expiration Length to Session Variables using PHP

0 votes

I would like to make a timeout length to session variables, so that if a user didn't use the browser page for let's say 5 minutes - the session variables would expire and the user would need to login again.

Q: What's the best way to implement this functionality?

posted Jul 8, 2013 by anonymous

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1 Answer

+1 vote

You can either use cookies or do something like that:

In your case is would be
if ($_SESSION['timeout'] + 5 * 60 < time()) {
// session timed out
} else {
// session ok

answer Jul 8, 2013 by anonymous
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+1 vote

Why I can't read static variables of a child class, even so the variable is protected or public?

Here's what I tried:

class A {
 protected static $foo = "bar";

class B {
 public function readFoo() {
 return self::$foo;

When now calling B::readFoo, I get the following error:

var_dump((new B())->readFoo());

PHP Fatal error: Access to undeclared static property: B::$foo in php shell code on line 1
PHP Stack trace:
PHP 1. {main}() php shell code:0
PHP 2. B->readFoo() php shell code:1

Fatal error: Access to undeclared static property: B::$foo in php shell
code on line 1

Call Stack:
 86.2643 231224 1. {main}() php shell code:0
 86.2666 231352 2. B->readFoo() php shell code:1