CodeGen_PECL int pass-by-reference

Hello list, It was suggested I ask my question here, hope this is appropriate. I'm trying to write a wrapper extension for the netCDF C library (or the C++ library would be better, but sounds much harder). So far, I'm trying to do this with CodeGen_PECL (I've also briefly tried SWIG, but had no luck). The problem I'm having is that the netCDF C library has this nasty habit of returning values using pass-by-reference (it uses the actual return value for an error code). So far, mostly "int" values. For example, the nc_open function has the following C prototype: int nc_open (const char *path, int omode, int *ncidp); Where the return value is an error code, and the ncidp parameter is overwritten with the filehandle number of the opened file. But I can't figure out how to construct a <proto> and <code> block that will make this work. E.g.: <function name="nc_open"> <proto> int nc_open(string path, int omode, resource nc_filehandle &amp;ncidp) </proto> <code> <?data int intncidp, retval; retval = nc_open((char*)path, omode, &intncidp); ncidp = (long)intncidp; RETURN_LONG(retval); ?> </code </function> Seems like this should work, but the new value for the third parameter doesn't get passed back to PHP. E.g.: <?php $intHandle = 42; nc_open('/path/to/file.nc', NC_NOWRITE, $intHandle); //or nc_open('/path/to/file.nc', NC_NOWRITE, &$intHandle); neither works echo $intHandle; ?> Outputs "42". And looking at the C function generated by CodeGen_PECL, I don't see any mechanism there for the value to get passed back, so I must not be giving the right input to make it happen. Help?!? Thanks! > Le 13 sept. 07 à 14:56, Matthew Williamson a écrit : > > > So, to ask again, I want to know what the <function> tag, > > specifically the <proto> and <code> tags would look like if you > > wanted to do pass-by-reference (and get a modified value back) in > > one of the parameters. That's the question. Perhaps I've > > overcomplicated it with a real-world example, but that is what I > > want to know. > > You should ask on the PECL list, I think Harmut, the CodeGen_PECL > author, hangs around there more often. > > > > -- > Bertrand Mansion > Mamasam > Work : http://www.mamasam.com > Blog : http://golgote.freeflux.net > > -- > PEAR General Mailing List (http://pear.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > >