boolean PEAR_PackageUpdate::preferencesAllowUpdate (
Checks whether or not the user's preferences allow an update to the latest version of the package. The user's preferences may define restrictions such as: don't update at all, don't update until a new version has been released (remembers the last version asked), only ask for certain states such as beta or stable, only ask for minor or higher version updates (no bug fixes), or only ask for major version updates.
This function can not be called statically.
boolean - TRUE if the user's preferences allow an update for the latest version of the package, FALSE otherwise.