CODEWITHSUNDEEP
php
Tim
Tim

Reputation: 79

PHP function can not be called

I have a link in page A that directs to page B. page B has a function like this:

function s(){
    $_SESSION['active']='0';
}
s();
echo $_SESSION['active'];

The problem is that in order for function s() to be called and $_SESSION['active'] be set, I need a second refresh, and this adds some overhead. I don't know why this function is not called when directing from page A to B? any help would be appreciated.

EDIT 1: I have session_start(); at the very top of every php script. the only solution I could come up with is a second refresh

EDIT 2: I have inspected the code very carefully, echoing every variable in my function and also using XDEBUG. the problem is as I stated, when directing to page B the function is not called until I refresh the page.

EDIT 3: Problem solved. it was a very stupid mistake, that session variable was unset somewhere in the code preceding that function. that problematic function was part of nested functions, and I am using circular references in number of functions which makes my code hard to read, That is why I could't post here. Thanks ever one, it is really a shame.

Upvotes: 0

Views: 63

Answers (2)

slevy1
slevy1

Reputation: 3832

There are a couple of choices. One could move the session code to page A so that when it redirects to B, one could see the updated session value. Or, you could try something like this on page B:

<?php
session_start();
function s(){
    $_SESSION['active']='0';
}
s();
session_write_close()
session_start();
echo $_SESSION['active'];

See demo.

You may wish to review a related discussion here.

Note, however, that when I ran this code:

<?php
session_start();

function s(){
   $_SESSION['active']='0';
}
s();
echo $_SESSION['active'];

at 3v4l.org it ran fine with PHP 5.2.3-5.6.30 and 7.0.0-7.2.0beta1. If one is using PHP 4 or an earlier version of PHP 5, the function does execute, but the result comes with warnings.

Upvotes: 1

Exprator
Exprator

Reputation: 27503

function s(){
$_SESSION['active']='0';
 return $_SESSION['active'];
}
$result =s();
echo $result;

Try this as there is no return from the function

Upvotes: 1

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