The page is available only when the PHP plugin is enabled. The PHP plugin is bundled with PhpStorm and activated by default. If the plugin is disabled, enable it on the Installed tab of the Settings/Preferences | Plugins page, as described in Managing plugins.
On this page, specify the PHP methods and functions which you want the debugger to skip in addition to the common list of items to be skipped which is defined on the Debugger. Stepping page.
Skip magic methods
Select this checkbox to suppress stepping into PHP magic methods and any other methods or functions with names starting with a double underscore
Select this checkbox to suppress stepping into constructors.
In this area, create a list of specific methods that you do not want PhpStorm to step into.
In this area, create a list of specific files that you do not want PhpStorm to step into. This is helpful when you are using a framework with numerous core files stepping into which is not necessary.