socket_set_option
(PHP 4 >= 4.3.0, PHP 5, PHP 7)
socket_set_option — Sets socket options for the socket
Description
bool socket_set_option ( resource $socket , int $level , int $optname , mixed $optval ) The socket_set_option() function sets the option specified by the optname parameter, at the specified protocol level, to the value pointed to by the optval parameter for the socket.
Parameters
socket
A valid socket resource created with socket_create() or socket_accept().
level
The level parameter specifies the protocol level at which the option resides. For example, to retrieve options at the socket level, a level parameter of SOL_SOCKET would be used. Other levels, such as TCP, can be used by specifying the protocol number of that level. Protocol numbers can be found by using the getprotobyname() function.
optname
The available socket options are the same as those for the socket_get_option() function.
optval
The option value.
Return Values
Returns TRUE on success or FALSE on failure.
Examples
Example #1 socket_set_option() example
<?php
$socket?=?socket_create(AF_INET,?SOCK_STREAM,?SOL_TCP);
if?(!is_resource($socket))?{
????echo?'Unable?to?create?socket:?'.?socket_strerror(socket_last_error())?.?PHP_EOL;
}
if?(!socket_set_option($socket,?SOL_SOCKET,?SO_REUSEADDR,?1))?{
????echo?'Unable?to?set?option?on?socket:?'.?socket_strerror(socket_last_error())?.?PHP_EOL;
}
if?(!socket_bind($socket,?'127.0.0.1',?1223))?{
????echo?'Unable?to?bind?socket:?'.?socket_strerror(socket_last_error())?.?PHP_EOL;
}
$rval?=?socket_get_option($socket,?SOL_SOCKET,?SO_REUSEADDR);
if?($rval?===?false)?{
????echo?'Unable?to?get?socket?option:?'.?socket_strerror(socket_last_error())?.?PHP_EOL;
}?else?if?($rval?!==?0)?{
????echo?'SO_REUSEADDR?is?set?on?socket?!'?.?PHP_EOL;
}
?>See Also
- socket_create() - Create a socket (endpoint for communication)
- socket_bind() - Binds a name to a socket
- socket_strerror() - Return a string describing a socket error
- socket_last_error() - Returns the last error on the socket
- socket_get_option() - Gets socket options for the socket
← socket_set_nonblock
socket_setopt →
? 1997–2017 The PHP Documentation GroupLicensed under the Creative Commons Attribution License v3.0 or later.
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