The page is available only when the PHP and the Command Line Tool Support plugins are enabled. The plugins are not bundled with IntelliJ IDEA, but they can be installed on the Settings/Preferences | Plugins page as described in Installing plugins from JetBrains repository. Once enabled, the plugins are available at the IDE level, that is, you can use them in all your IntelliJ IDEA projects.
On this page, enable execution of the Composer Dependency Manager commands through the dedicated user interface and appoint the default composer.json for the IntelliJ IDEA project.
Path to composer.json
In this field, specify the location of the composer.json that you want to use as default. All the Composer commands invoked from from the main menu will be executed in accordance with the settings from this configuration file.
You can have several composer.json files in one IntelliJ IDEA project. For each composer.json, actions are invoked from its context menu in the editor or in the Project view, or using the shortcut links on top of the editor panel.
Add packages as libraries
Use this checkbox to configure the open-for-edit status of Composer packages. To protect packages under vendor/*/* against editing, leave the checkbox selected (this is the default setting).
If you want to edit the Composer packages under vendor/*/*, clear the checkbox.
Synchronize IDE Settings with composer.json
Select this checkbox to automatically detect the PHP language level and configure project Source and Test roots based on the configuration from composer.json.
IntelliJ IDEA is aware of PSR-0/PSR-4 source roots and their namespace prefixes. It sets the Source root based on the
Because composer.json contains the most up-to-date information about the project configuration, this automatic synchronization ensures that the Source and Test folders exactly match the project structure, and the correct PHP language level is set automatically.
Check for available package updates
Use this checkbox to configure automatic checks for available package updates. By default, the checkbox is selected. To retrieve the available package updates and provide better coding assistance in composer.json, IntelliJ IDEA runs the update --dry-run command in background every time you open a project or modify composer.json.
Show composer.json top panel with quick actions
Use this checkbox to toggle the visibility of the quick actions panel displayed on top of the composer.json editor. See Work with composer.json for details.
Notify about missing vendor directory
Select this checkbox to have IntelliJ IDEA check whether the vendor directory is missing and display the corresponding notification every time you open a project or modify composer.json. You can use the shortcut link in the notification to quickly install Composer dependencies.
In this area, choose how the Composer commands will be executed: