[MapServer-users] Is processLegendTemplate() not supported in PHP/Mapscript 8

[Fujioka (Duke)]

Hello,

I have been finally upgrading the existing mapping application from 
PHP/Mapscript 5.x to SWIG Mapscript 8.0.

In the previous version, I used
$legend = $oMap->processLegendTemplate(array());

but the parameters for processLegendTemplate change in Mapscript 8. So, 
I tried this:
$names = array();
$values = array();
$legend_buffer = $oMap->processLegendTemplate($names, $values, 0);

Then, I got an error "Uncaught TypeError: Expected SWIGTYPE_p_p_char for 
argument 2 of mapObj_processLegendTemplate".
Because I had no idea what this meant, I asked ChatGPT and Copilot. Both 
suggested to use "an array of strings". ChatGPT showed me like:
$names = new mapscript\stringArray(0);
$values = new mapscript\stringArray(0);

and Copilot suggested like:
$names = new SWIG_StringArray(3);
$values = new SWIG_StringArray(3);

but either stringArray() or SWIG_StringArray() is not defined. Then, 
they indicated that processLegendTemplate() was not implemented in 
PHP/Mapscript 8 and suggested me to find an alternative way to generate 
legend.

So, is processLegendTemplate() not available in PHP/Mapscript?
Has anyone figured out a workaround?

Here is my system:
PHP Version 8.3.19
MapServer version 8.0.1
OS: Ubuntu

And one of the templates I use looks like:

[leg_class_html opt_flag=13]{class_name:"[leg_class_name]", 
icon:"[leg_icon]", title: "[leg_class_title]"},[/leg_class_html]

# This one becomes a JSON object and is sent to the browser where 
Javascript parses it.

Thanks,

Ei

-- 
========================
   Ei Fujioka
   Research Scientist
   Nicholas School
   Duke University

   (919) 684-3518
   efujioka at duke.edu
========================