Question

I have a situation where i need to maintain a static variable globally where it value can be change by diferent php files.

I have below class,

<?php
class FlagMe {
    public static $flag;

    public static function setFlag($flag) {
        self::$flag = $flag;
    }

    public static function getFlag() {

        return self::$flag;
    }
}
?>

And I am setting a value from a diferent php file like below,

FlagMe::setFlag("SomeValue");

But suppose after a post request code flow in same php script (controller class) with a page refresh, and when I am try to access that static variable it gives me instead of giveing the set value “SomeValue” previously.

$temVar = FlagMe::getFlag(); // gives null

What am I missing here please?

Thanks.

Answer 1

Once the page is refreshed, a new execution of the script occurs. Object instances/class variables are not saved between different executions.

If you wish to save a variable, store it in a session or a cookie. Then, on every execution, check for the session and set the variable accordingly.