How to load php DS namespace in PhpStorm

Question

I have installed php-ds extension as shown here. But I am unable to Load the DS namespace in PhpStorm.

How can I do this?

Answer 1

You need stub files in order for PhpStorm to understand what DS (a PHP extension written in C) offers (classes/functions/etc).

Stub file is basically a PHP version of that -- just "declaration/documentation" part -- e.g. function declarations but with empty bodies. You can either make your own ... or find some existing ones (if somebody else did it already, of course).

A bit more on stub files in general:

• https://stackoverflow.com/a/15775431/783119
• https://stackoverflow.com/a/30329412/783119

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So .. basically what you need is php-ds/polyfill -- "You should also include the polyfill in your project for compatibility and IDE integration" .

IDE will read such files and will understand what real DS extension has to offer/what it does (type of parameters/returns/etc).