Re: Does requesting $_SERVER variables need to query the server

Marc, $_SERVER is an array and it should have all the information. I do not know the answer for the latter part of your query. Regards, Shreyas On Thu, Feb 24, 2011 at 12:30 AM, Marc Guay <marc.guay@gmail.com> wrote: > This question will probably reveal my lacking knowledge of the > fundamentals, but I'm a go for it anyway: > > When you use a $_SERVER variable, is a query made to the server to get > the information or is it just sitting in a variable all ready to go? > Reworded, is there any efficiency gained by storing the data in a > "local" variable if it's going to be used many times in the script? > My experience with jQuery has taught me to store $(objects) in local > variables if they're going to be used repeatedly because the DOM is > queried every time a jQuery object is generated, so I'm wondering if a > similar logic applies. > > Example: > > if ($_SERVER['SCRIPT_NAME'] == 'how.php') > // do stuff > if ($_SERVER['SCRIPT_NAME'] == 'why.php') > // do other stuff > > vs. > > $script_name = $_SERVER['SCRIPT_NAME']; > > if ($script_name == 'how.php') > // do stuff > if ($script_name == 'why.php') > // do other stuff > > Cheerios, > Marc > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > > -- Regards, Shreyas Agasthya