Because I did not find a complete article that includes plugins and configuration, I assembled my own, after I spent some time to get a fully functional environment. Mandatory plugins List of plugins to be able to syntax-highlight and auto-complete php and wordpress framework code. Autocompletion of PHP code vscode-intelephense (IMHO better alternative to the vscode default) Autocompletion of wordpress hooks wp-hooks/vscode-wordpress-hooks Autocompletion of wordpress core functions wordpresstoolbox Lastly configure the Wordpress Stub in PHP Intelephense as described in this Github Issue.