Richard Lynch wrote: > > On Tue, January 8, 2008 3:40 pm, Jack Mays wrote: >>> funnily enough exit is even listed as a function. >>> >>> >> Sure it is: http://us2.php.net/manual/en/function.exit.php >> >> Unless I'm missing a point here or something. :) > > Technically, exit is "language construct" and not a function. > > It does not require the () at the end. > > There are more than a few "language constructs" that are documented > just like functions because 99% of the time, nobody cares that they > aren't functions. > > Some common ones: > > require > include > isset > exit > die ??? (maybe this one IS a function) > echo > print (used to be a function, maybe still is?) Don't forget the infinitely useful "empty". It's particularly useful in a loosely typed language but where your programming style is to check everything twice before gingerly poking it with a long stick! In reality it's usually a handy shortcut for checking e.g. array values. You can replace: if (isset($arr['idx']) && 0 != $arr['idx']) with: if (!empty($arr['idx'])) most of the time. (empty($var) returns true of $var is not defined, is an empty string, a 0 numeric value, an empty array and maybe a few others.... Col -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
