Question

I have very big stack of code.
I need to use session_start() function always.
If I hasn’t used session_start() not run each other.

example:

<?php 
if(session_start() == "used")
{
       // not run
}
else
{
       session_start();
}
?>

Answer 1

do you mean, u want to check if the session has already been started? you can get it from here

Check if PHP session has already started

if(session_id() == '') {
    // session isn't started
}