Workbench OptionsPreferences
The Workbench Options preferences dialog allows you to configure the default behavior of the workspace during the debugging process.
The Workbench Options Preferences page is accessed from Window | Preferences | PHP | Debug | Workbench Options.

The Workbench Options configuration options are:
- Allow multiple debug sessions - Select whether to Allow multiple debug sessions to run simultaneously (Always, Never or Prompt).
- Switch back to PHP perspective when the debug is terminated - Select whether the PHP Persepctive will open when the debug is terminated (Always, Never or Prompt).
Workbench Options
- Open in Browser - Mark the checkbox for the debugged files to be displayed in a browser during debugging.
- Open PHP Debug Views - Mark the 7checkbox for PHP Debug Views to be displayed when a debug session is launched. By default, a dialog will appear when a debug session is launched asking whether you want to open the Debug Perspective when a debugging session is run. To change this behavior, open the Perspectives Preferences dialog by going to Window | Preferences | Run/Debug | Perspectives and select Always, Never or Prompt in the 'Open the associated perspective when launching' category.