(no version information, might be only in CVS)
php_stream_filter_unregister_factory -- Deregisters a filter factory with the Streams API
Description
int 
php_stream_filter_unregister_factory ( const char * filterpattern)
     Deregisters the filterfactory specified by the
     filterpattern making it no longer available for use.
    
注: 
      Filters registered by a loadable extension must be certain to call
      php_stream_filter_unregister_factory() during MSHUTDOWN.