The list contains all the currently configured local and remote PHP interpreters. In this list, choose the PHP interpreter to use in the current project by default. The list is inactive when the PHP language version is constrained in composer.json and settings synchronization with composer.json is enabled on the Composer page of the Settings/Preferences dialog ( Ctrl+Alt+S). You can also set the PHP language level directly from the status bar. When you open an existing project, IntelliJ IDEA analyzes it for the language features used and sets the appropriate language level automatically. However, if you attempt to use a code construct that is not supported by the specified language level, IntelliJ IDEA suggests a Switch to PHP quick-fix. Although the language version of each interpreter is detected automatically, you can still tell IntelliJ IDEA to provide you with coding assistance that corresponds to a different language level.

No correlation between the PHP version used in the project and the language level is enforced. Each functionality scope is associated with the PHP version that supports this functionality. In this list, specify the PHP functionality scope to get coding assistance for.

Current version of php for mac