Vous avez cherché: opperations (Japonais - Anglais)

a filter is a final piece of code which may perform opperations on data as it is being read from or written to a stream. any number of filters may be stacked onto a stream. custom filters can be defined in a php script using stream_register_filter() or in an extension using the api reference in 第43章. to access the list of currently registered filters, use stream_get_filters().
there are many wrappers built into php by default (see appendix i), and additional, custom wrappers may be added either within a php script using stream_register_wrapper(), or directly from an extension using the api reference in chapter 43.