socket_write Write to a socket intsocket_write resourcesocket stringbuffer intlength &warn.experimental.func; The function socket_write writes to the socket socket from buffer. 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 error. 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. 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. See also socket_accept, socket_bind, socket_connect, socket_listen, socket_read and socket_strerror.