void|PEAR_Error PEAR_PackageFileManager::detectDependencies (
)
Use addDependency() to add package dependencies
throws PEAR_PACKAGEFILEMANAGER_RUN_SETOPTIONS
throws PEAR_PACKAGEFILEMANAGER_PHP_COMPAT_NOT_INSTALLED
throws PEAR_PACKAGEFILEMANAGER_NO_PHPCOMPATINFO
This function can not be called statically.