grid-pdf-php where is it on dhtmlx5 PRO ?

If we are using PRO version, how should we call this

mygrid.toPDF(‘codebase/grid-pdf-php/generate.php’);

where can I find it ?

you have to download a package

See the link for more information
https://docs.dhtmlx.com/grid__data_export.html

there is also an online version where you don’t have to download a package. Sadly I cannot use that online version because php is blocked where I work.