Imagine this code:
class Test
{
public $result;
public function makeSum($a,$b)
{
$sum = $a+$b;
$this->result = $sum;
}
}
In a webserver.
At same exact moment, two browsers call a page that performs that operation. First one has $a=1 and $b=2 and second one $a=5 and $b=4
.
Are we sure that for first page $result will be 3 and for second one 9? Or is there possibility that result could be "wrong" for the page asking?
I'm talking in particular for PHP, but question can be general...
I think that will be never problems, but I would know if it's true and why.
Thank you!