Re: Header files in PHP

2014-08-21 19:20 GMT+02:00 Paul M Foster <paulf@quillandmouse.com>: > Folks: > > Over the years, I've heard a lot of back and forth about require_once, > require, include, include_once and he like. Most of it centers around > the CPU time taken to execute these calls. > > The "C" way to do something similar is to define a constant in a header > file and then check for its existence in the C code file. In PHP, this > would be roughly like this: > > LIBRARY FILE: > > define('CONST_DATE', TRUE); > > CODE FILE: > > if (!defined('CONST_DATE')) > include('date.lib.php'); > > Has anyone ever compared execute times to see if something like this > would be "cheaper" than include/require[_once]? Any thoughts on it? > First I'd evaluate, if it's worth it, when you use an opcode cache and an autoloader. I'd guess there is no measurable (and it's all about measurement) impact. > > Paul > > -- > Paul M. Foster > http://noferblatz.com > http://quillandmouse.com > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > > -- github.com/KingCrunch