Working with Perforce offline
The Perforce plugin keeps a log of VCS operations performed while offline, and replays the log when the user comes back online. The log of operations is stored in the .iws file and persists between PhpStorm restarts.
While offline, you can perform the following operations, which will be automatically replayed in online mode:
Move to another changelist
View Committed/Incoming changes (displaying cached information only).
The following operations are not supported in offline mode: update, commit, integrate, tracking of the unversioned, locally deleted and modified without checkout files (unversioned files are shown as unchanged), and any other operations that require server connection.
When offline mode is activated, the following notification balloon appears:
This balloon fades after a while; Perforce is offline message appears at the bottom of the Local Changes tab of the Version Control tool window.
Automatically, when the Perforce server becomes unavailable. PhpStorm switches to the offline mode automatically, and displays an offline notification in a popup. To enable this behaviour, select the Switch to offline mode automatically if Perforce is unavailable checkbox in the Perforce page of the Settings dialog.
Manually at anytime, by choosing Work Offline From the context menu.and select