Re: [PHP-XML-DEV] DomXPath extension

On 24.7.2004 17:43 Uhr, Adam Maccabee Trachtenberg wrote:

> On Sat, 24 Jul 2004, Jason Barnett wrote:
> 
> 
>>To be honest I've never written any extensions or PHP source before
>>so this will be fun to try, but obviously whatever I come up with is
>>not going to be optimal.  But I want to see this get done so I'll
>>give it my best shot... and let you all make suggestions or just
>>improve it yourselves.
> 
> 
> I looked at the source code last night and it doesn't look too
> tough. The hardest part is also groking the libxml2 functions.
> 
> However, all I think you really need to do is take the original
> query() method and modify the part that grabs the results from libxml2
> and turns it into a string or number instead of a DOMNodeList.

... depending on the 3rd optional argument $type ;)

Look also at the xsl_ext_function_php function in ext/xsl/xsltprocessor.c
In there, we convert different xpath results-types to different PHP 
types with the help of libxml2 cast functions and ZendEngine macros

If you're stuck somewhere, just ask here again (or on internals@ if it's 
a common php extension question)

And if you have a working implementation (doesn't have to perfect or 
complete), just send the patch here (or a link to it) and we will have a 
look at it

Have fun.

chregu


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