socket_write
Write to a socket
Description
int socket_write
( resource $socket
, string $buffer
[, int $length = 0
] )
Parameters
-
socket
-
-
buffer
-
The buffer to be written.
-
length
-
The optional parameter length can specify an
alternate length of bytes written to the socket. If this length is
greater than the buffer length, it is silently truncated to the length
of the buffer.
Return Values
Returns the number of bytes successfully written to the socket or FALSE on failure.
The error code can be retrieved with
socket_last_error. This code may be passed to
socket_strerror to get a textual explanation of the
error.
Note:
It is perfectly valid for socket_write to
return zero which means no bytes have been written. Be sure to use the
=== operator to check for FALSE in case of an
error.
Notes
Note:
socket_write does not necessarily write all bytes
from the given buffer. It's valid that, depending on the network
buffers etc., only a certain amount of data, even one byte, is written
though your buffer is greater. You have to watch out so you don't
unintentionally forget to transmit the rest of your data.
See Also
- socket_accept
- socket_bind
- socket_connect
- socket_listen
- socket_read
- socket_strerror