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socket_set_blocking — Specifies socket blocking or non-blocking mode.


bool socket_set_blocking(socket_descriptor, enable_blocking);
resource socket_descriptor: Socket descriptor
bool enable_blocking: Socket blocking mode


TRUE on success; FALSE otherwise


socket_set_blocking() switches between blocking and non-blocking mode on a socket. In non-blocking mode, a socket call returns immediately; in blocking mode, the result is suspended until data is sent. The default is blocking mode.


PHP Version: 4.0b4+


Example 846. Turn off socket blocking

socket_set_blocking ($socket_descriptor, FALSE)
    or trigger_error ('Socket blocking could not be disabled');

PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at The authors of this book have elected not to choose any options under the OPL. This online book was obtained from and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.

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