(PHP 4 >= 4.0.7, PHP 5)
socket_write — Write to a socket
( resource $socket
, string $buffer
[, int $length
The buffer to be written.
The optional parameter length
can specify an
alternate length of bytes written to the socket. If this length is
greater then the buffer length, it is silently truncated to the length
of the buffer.
Returns the number of bytes successfully written to the socket or FALSE
one error. 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
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
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.