JetBrains PhpStorm is a commercial PHP IDE that can be configured to work with WordPress sites, allowing users to easily build and maintain custom plugins. This doc will set you up with a local environment in PhpStorm to create your custom plugins and themes.
For detailed information, see WordPress Development using PhpStorm. This document focuses on integrating and showcasing the PhpStorm workflow and is current as of PhpStorm version 2017.1.4.
If you do not already have one, create a new WordPress site on Pantheon. This will be your empty site, in which to develop your new plugin or theme.
Click Create New Project from the startup window or go to File Menu > New Project... if you have an existing project open.
Name your project.
Select WordPress Plugin as the project type on the left sidebar.
Specify or browse to the file path to save your project's files. This is where PhpStorm will store its "working files", and should be separate from your WordPress directory.
Specify or browse to the root directory for your local WordPress site, and click Create:
There will not be any files open within your project once you complete these steps. You will find a PHP file in the project's root, which contains the standard plugin header for WordPress.
Many WordPress plugin developers use the command line tool WP-CLI. This is useful if you have a local development environment and want to use WP-CLI to manage it.
Once you have installed WP-CLI on your local machine you can configure PhpStorm to recognize WP-CLI from within your project by following these steps:
Use your site's SFTP connection information to configure the Connection tab:
Auth Type: Select Password and specify password, or key pair and select your private SSH key.
Root Path: Click the Autodetect button and the Root Path should be automatically populated:
Click the Test SFTP Connection... button and make sure the connection is successful before moving forward. Click OK.
Provide the file paths within the Mappings tab to allow correspondence between project folders:
Go to Tools Menu > Deployment > Automatic Upload.
You are now ready to begin editing your code. Any files you change and save locally will be automatically uploaded to your Pantheon development environment.