performing operations directly on $_SESSION vars

[minorgod]

I have scripts that are constantly changing the values of $SESSION vars. Rather than copying the values to temp vars, then doing the operations, then copying them back to the $SESSION vars, I've just been doing all my operations directly on the $_SESSION vars. Is this a performance issue? Is it significantly slower than performing the same operations on locally declared variables? Could someone explain?

[barand]

As you don't have the overhead of transferring the data backwards and forwards I'd expect your way to be quicker.

[suntra]

Remember that session variables are written in a file ONLY when the script has been executed, so I [also] think it's quicker.

[minorgod]

Thanks for the info. I feel much better about my application now.🙂