SO_DEBUG |
Reports whether debugging information is being recorded.
|
int
|
SO_BROADCAST |
Reports whether transmission of broadcast messages is supported.
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int
|
SO_REUSEADDR |
Reports whether local addresses can be reused.
|
int
|
SO_KEEPALIVE |
Reports whether connections are kept active with periodic transmission
of messages. If the connected socket fails to respond to these messages,
the connection is broken and processes writing to that socket are notified
with a SIGPIPE signal.
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int
|
SO_LINGER |
Reports whether the socket lingers on
socket_close if data is present. By default,
when the socket is closed, it attempts to send all unsent data.
In the case of a connection-oriented socket,
socket_close will wait for its peer to
acknowledge the data.
If l_onoff is non-zero and
l_linger is zero, all the
unsent data will be discarded and RST (reset) is sent to the
peer in the case of a connection-oriented socket.
On the other hand, if l_onoff is
non-zero and l_linger is non-zero,
socket_close will block until all the data
is sent or the time specified in l_linger
elapses. If the socket is non-blocking,
socket_close will fail and return an error.
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array. The array will contain two keys:
l_onoff and
l_linger.
|
SO_OOBINLINE |
Reports whether the socket leaves out-of-band data inline.
|
int
|
SO_SNDBUF |
Reports the size of the send buffer.
|
int
|
SO_RCVBUF |
Reports the size of the receive buffer.
|
int
|
SO_ERROR |
Reports information about error status and clears it.
|
int (cannot be set by socket_set_option)
|
SO_TYPE |
Reports the socket type (e.g.
SOCK_STREAM).
|
int (cannot be set by socket_set_option)
|
SO_DONTROUTE |
Reports whether outgoing messages bypass the standard routing facilities.
|
int
|
SO_RCVLOWAT |
Reports the minimum number of bytes to process for socket
input operations.
|
int
|
SO_RCVTIMEO |
Reports the timeout value for input operations.
|
array. The array will contain two keys:
sec which is the seconds part on the timeout
value and usec which is the microsecond part
of the timeout value.
|
SO_SNDTIMEO |
Reports the timeout value specifying the amount of time that an output
function blocks because flow control prevents data from being sent.
|
array. The array will contain two keys:
sec which is the seconds part on the timeout
value and usec which is the microsecond part
of the timeout value.
|
SO_SNDLOWAT |
Reports the minimum number of bytes to process for socket output operations.
|
int
|
TCP_NODELAY |
Reports whether the Nagle TCP algorithm is disabled.
|
int
|
MCAST_JOIN_GROUP |
Joins a multicast group. (added in PHP 5.4)
|
array with keys "group", specifying
a string with an IPv4 or IPv6 multicast address and
"interface", specifying either an interface
number (type int) or a string with
the interface name, like "eth0".
0 can be specified to indicate the interface
should be selected using routing rules. (can only be used in
socket_set_option)
|
MCAST_LEAVE_GROUP |
Leaves a multicast group. (added in PHP 5.4)
|
array. See MCAST_JOIN_GROUP for
more information. (can only be used in
socket_set_option)
|
MCAST_BLOCK_SOURCE |
Blocks packets arriving from a specific source to a specific
multicast group, which must have been previously joined.
(added in PHP 5.4)
|
array with the same keys as
MCAST_JOIN_GROUP, plus one extra key,
source, which maps to a string
specifying an IPv4 or IPv6 address of the source to be blocked.
(can only be used in socket_set_option)
|
MCAST_UNBLOCK_SOURCE |
Unblocks (start receiving again) packets arriving from a specific
source address to a specific multicast group, which must have been
previously joined. (added in PHP 5.4)
|
array with the same format as
MCAST_BLOCK_SOURCE.
(can only be used in socket_set_option)
|
MCAST_JOIN_SOURCE_GROUP |
Receive packets destined to a specific multicast group whose source
address matches a specific value. (added in PHP 5.4)
|
array with the same format as
MCAST_BLOCK_SOURCE.
(can only be used in socket_set_option)
|
MCAST_LEAVE_SOURCE_GROUP |
Stop receiving packets destined to a specific multicast group whose
soure address matches a specific value. (added in PHP 5.4)
|
array with the same format as
MCAST_BLOCK_SOURCE.
(can only be used in socket_set_option)
|
IP_MULTICAST_IF |
The outgoing interface for IPv4 multicast packets.
(added in PHP 5.4)
|
Either int specifying the interface number or a
string with an interface name, like
eth0. The value 0 can be used to
indicate the routing table is to used in the interface selection.
The function socket_get_option returns an
interface index.
Note that, unlike the C API, this option does NOT take an IP
address. This eliminates the interface difference between
IP_MULTICAST_IF and
IPV6_MULTICAST_IF.
|
IPV6_MULTICAST_IF |
The outgoing interface for IPv6 multicast packets.
(added in PHP 5.4)
|
The same as IP_MULTICAST_IF.
|
IP_MULTICAST_LOOP |
The multicast loopback policy for IPv4 packets, which
determines whether multicast packets sent by this socket also reach
receivers in the same host that have joined the same multicast group
on the outgoing interface used by this socket. This is the case by
default.
(added in PHP 5.4)
|
int (either 0 or
1). For socket_set_option
any value will be accepted and will be converted to a boolean
following the usual PHP rules.
|
IPV6_MULTICAST_LOOP |
Analogous to IP_MULTICAST_LOOP, but for IPv6.
(added in PHP 5.4)
|
int. See IP_MULTICAST_LOOP.
|
IP_MULTICAST_TTL |
The time-to-live of outgoing IPv4 multicast packets. This should be
a value between 0 (don't leave the interface) and 255. The default
value is 1 (only the local network is reached).
(added in PHP 5.4)
|
int between 0 and 255.
|
IPV6_MULTICAST_HOPS |
Analogous to IP_MULTICAST_TTL, but for IPv6
packets. The value -1 is also accepted, meaning the route default
should be used.
(added in PHP 5.4)
|
int between -1 and 255.
|