(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)
stream_set_blocking — Set blocking/non-blocking mode on a stream
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).
streamThe 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.
Note:
On Windows, this has no affect on local files. Non-blocking IO for local files is not supported on Windows.