stream_set_blocking Set blocking/non-blocking mode on a stream &reftitle.description; boolstream_set_blocking resourcestream boolenable Sets blocking or non-blocking mode on a stream. This function works for any stream that supports non-blocking mode (currently, regular files and socket streams). &reftitle.parameters; stream The stream. enable If enable is &false;, the given stream will be switched to non-blocking mode, and if &true;, it will be switched to blocking mode. This affects calls like fgets and fread that read from the stream. In non-blocking mode an fgets call will always return right away while in blocking mode it will wait for data to become available on the stream. &reftitle.returnvalues; &return.success; &reftitle.notes; On Windows, this has no affect on local files. Non-blocking IO for local files is not supported on Windows. &reftitle.seealso; stream_select