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PHP Functions
Function: socket_bind (PHP 4 >= 4.1.0, PHP 5) socket_bind -- Binds a name to a socketDescriptionbool socket_bind ( resource socket, string address [, int port] )Binds the name given in address to the socket described by socket . Parameters
socket A valid socket resource created with socket_create() . addressIf the socket is of the AF_INET family, the address is an IP in dotted-quad notation (e.g. 127.0.0.1 ). If the socket is of the AF_UNIX family, the address is the path of a Unix-domain socket (e.g. /tmp/my.sock ). port (Optional)The port parameter is only used when connecting to an AF_INET socket, and designates the port on the remote host to which a connection should be made. Return ValuesReturns TRUE on success 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. Examples
Example 1. Using socket_bind() to set the source address
<?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);
?>
NotesNote: This function must be used on the socket before socket_connect() . Note: Windows 9x/ME compatibility note: socket_last_error() may return an invalid error code if trying to bind the socket to a wrong address that does not belong to your machine. Related Function(s) |