Adds
filtername
to the list of filters attached to
stream
. This filter will be added with the specified
params
to the
beginning
of the list and will therefore be called first during stream
opperations. To add a filter to the end of the list, use
stream_filter_append()
.
注意 stream_register_filter() must be called first in order to register the desired user filter to filtername .
See Also:
stream_register_filter()
, and
stream_filter_append()