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To: Hans Moog <hans.moog@mkj-computing.de>
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Subject: Re: AW: [PHP-DEV] Method overloading by method signature
From: cschneid@cschneid.com (Christian Schneider)

Hans Moog wrote:
> When it would be:
> 
> ==
>   function xpath(DomDocument $arg) {
>     return new DomXPath($arg);
>   }
> 
>   function xpath(XmlTree $arg) {
>     return new DomXPath($this->loadXML($arg->getSource())));
>   }
> 
>   function xpath(string $arg) {
>     return new DomXPath($this->loadXML($arg));
>   }
> ==


function xpathFromDom($arg) {
	return new DomXPath($arg);
}

function xpathFromTree($arg) {
	return new DomXPath($this->loadXML($arg->getSource())));
}

function xpathFromString($arg) {
	return new DomXPath($this->loadXML($arg));
}


Works perfectly well. And you don't even need to document them because 
the names speak for themselves. A much simpler (and clearer) solution IMHO.

If you want an OO way I'd prefer something like
	$xpath = $obj->getXPath();
to
	$xpath = $this->xpath($obj);
anyway. This doesn't work with basic types like strings but having a 
special case there is not a problem IMHO as using those two 
interchangeably will lead to other problems anyway.

- Chris