PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8
socket_set_nonblock - Sets nonblocking mode for file descriptor fd
Code Examples

socket_set_nonblock( Socket$socket ): bool

The socket_set_nonblock function sets the O_NONBLOCK flag on the socket specified by the socket parameter.

When an operation (e.g. receive, send, connect, accept, ...) is performed on a non-blocking socket, the script will not pause its execution until it receives a signal or it can perform the operation. Rather, if the operation would result in a block, the called function will fail.



A Socket instance created with socket_create or socket_accept.

Return Values

Returns true on success or false on failure.


Version Description
8.0.0 socket is a Socket instance now; previously, it was a resource.

Related Functions

Example of socket_set_nonblock

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