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# stream_filter_append

(PHP 4 >= 4.3.0)

stream_filter_append -- Attach a filter to a stream.

## Description

bool stream_filter_append ( resource stream, string filtername [, string params])

Adds `filtername` to the list of filters attached to `stream`. This filter will be added with the specified `params` to the end of the list and will therefore be called last during stream opperations. To add a filter to the beginning of the list, use stream_filter_prepend().

> Note: 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_prepend()

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