IP Binding and Multithreading

[Itshim]

Greetings,

I have two questions:
1. In PHP4 can I make script work so it binds to multiple IP's?

Basically in the script I am connecting to another server multiple times and retrieving some information. I would like to be able to tell PHP: for the first connection use this IP address, for the second connection use this IP address.

I believe this can be achieved using the socket extension; I just wanted to know if I am on the right track.

2. Is there a way to use multithreading in PHP4?

For this question I found the curl_multi_* functions, but they are only available in PHP5, I would like a solution in PHP4.

Any help on these two questions is greatly appreciated.

Thanks,
Itshim

 

[Itshim]

A little more research has revealed the function 'pcntl_fork()' for multi-tasking in a script. I will need to do some more research, but am I on the right track?

Thanks,
Itshim

 

[Itshim]

This code will work for IP binding in PHP5.

<?php

$conn = stream_context_create(array('socket'=>array('bindto' => "1.2.3.4:0")));
file_get_contents("[URL unfurl="true"]http://url",[/URL] NULL, $conn);

?>

Is there a way to achieve the same thing in PHP4?

Thanks,
Itshim