Javascript validator
Web page editor
Sets one of the given preference to the given value. Both preference and value, should have valid values.
throws PEAR_PACKAGEUPDATE_ERROR_INVALIDPREF, when invalid preference is used (PEAR_PACKAGEUPDATE_PREF_NOUPDATES, PEAR_PACKAGEUPDATE_PREF_NEXTRELEASE, PEAR_PACKAGEUPDATE_PREF_TYPE, PEAR_PACKAGEUPDATE_PREF_STATE).
Javascript validator
Web page editor