socket_write

Write to a socket (PHP 4 >= 4.0.7, PHP 5)
int socket_write ( resource socket, string buffer [, int length] )

The function socket_write() writes to the socket from the given buffer.

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 then 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 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.

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()

Examples ( Source code ) » socket_write


<?php

// Create a new socket

$sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);



// An example list of IP addresses owned by the computer

$sourceips['kevin']    = '127.0.0.1';

$sourceips['madcoder'] = '127.0.0.2';



// Bind the source address

socket_bind($sock, $sourceips['madcoder']);



// Connect to destination address

socket_connect($sock, '127.0.0.1', 80);



// Write

$request = 'GET / HTTP/1.1' . "\r\n" .

          'Host: example.com' . "\r\n\r\n";

socket_write($sock, $request);



// Close

socket_close($sock);



?>

Code Examples / Notes » socket_write

If you connect to a Server in a way like you do with telnet or some similar protokoll you may have problems with sending data to the server. I found out that at some servers there is a different between: <?php socket_write ($my_socket, $line, strlen ($line)); socket_write ($my_socket, "\r\n", strlen ("\r\n")); ?> witch worked at least, and <?php socket_write ($my_socket, $line."\r\n", strlen ($line."\r\n")); ?> wich made the server stop sending any data. I hope this helps to save a lot of time. I needed about two days to find out, that this was the problem ;)

socket_write

Write to a socket (PHP 4 >= 4.0.7, PHP 5) int socket_write ( resource socket, string buffer [, int length] )

Parameters

Return Values

Notes

Code Examples / Notes » socket_write

Change Language

Write to a socket (PHP 4 >= 4.0.7, PHP 5)
int socket_write ( resource socket, string buffer [, int length] )