Re: [Fwd: Re: PEAR framework changes for PHP5]

On Fri, Jan 30, 2004 at 11:28:54AM -0500, Hans Lellelid wrote: > On a related note, I believe PEAR tools would get far more use if they > could integrate more easily into other applications. One thing that I > think would facilitate this greatly is having a class path convention. > I should be able to write (e.g.) my own Log container or MDB driver and > specify a full path to that class when using the Log::factory(), > MDB::factory() method, etc. My web application does not live in > /usr/local/lib/php, and I don't want my container files to have to be > copied there so they can be found by the factory method. One solution > would be passing the actual path to the file (assumes 1-class per file); > a better (IMO) solution might be to have an [optional] array convention > -- e.g. array('filepath', 'classname'). I like the array idea because > it's kinda like what PHP does for specifying a method to be invoked > (e.g. by call_user_func). I've used dot-notation > (classpath.relative.to.include.ClassName) for many of my tools because > it provides at least a layer of abstraction between filesystem and > classname, but that isn't ideal either and wouldn't work for PEAR where > filenames and classnames do not match. It's probably non-obvious, but the Log package already supports this. Here's the relevant code from the Log::factory() implementation: $handler = strtolower($handler); $class = 'Log_' . $handler; $classfile = 'Log/' . $handler . '.php'; /* * Attempt to include our version of the named class, but don't treat * a failure as fatal. The caller may have already included their own * version of the named class. */ @include_once $classfile; /* If the class exists, return a new instance of it. */ if (class_exists($class)) { return new $class($name, $ident, $conf, $level); } This allows you to use your own, local handler implementation by including it before the call to Log::factory(): require_once 'Log.php'; require_once 'local/stuff/Log_custom.php'; $log =& Log:factory('custom'); -- Jon Parise (jon@php.net) :: The PHP Project (http://www.php.net/)