Variables initialize everytime I go to a page

[ady_bavarezu89]

That is NOT what session_start()

it is not? why is user_id null (Notice: Undefined index: user_id in) when I go to b.php the second time then?

 

The first time it shows 1 as it should but from the second time it becomes undefined.

[ady_bavarezu89]

it is not? why is user_id null (Notice: Undefined index: user_id in) when I go to b.php the second time then?

 

The first time it shows 1 as it should but from the second time it becomes undefined.

I think I found my problem....On my page b.php I also had a logout option. Which means that if I press a button my session is destroyed.

 

and I did it that way:

<button class="btn btn-primary" type="submit" onclick="myFunction()"> </button>

<script>
function myFunction(){
			<?php 
                          session_destroy();

			?>
		}
</script>

So php is interpreting my php code even if it's inside a javascript function that wasn't called. That's why that guy warned me about using javascript and php!

[ady_bavarezu89]

This time it finally works. It stores my session and more users can be logged in at the same time.

Finally!!

[Jessica]

PHP and Javascript are executed at completely different points in the process.

[ady_bavarezu89]

PHP and Javascript are executed at completely different points in the process.

Got it! I didn't knew that. Thanks a lot for the suggestions and everything