Migrate a php parser to c-libxml2 and parse new fields from a html

We have a existing php script that run over crontab, this scrip parse a folder whit some html files, some bigger then other, this have cause a delay when parser all. For this reason we need a parser whit fast speed. In my research I found c-libxml2 and golang +libxml2 to be the best solution for me this will run from command line linux. so we need to convert php to c-libxml2 format and also will need to parse more 15 fields from the html