PHP TCP Server example

event.php

<?php
$serv=stream_socket_server("tcp://0.0.0.0:8000",$errno,$errstr) or die("create server failed");

$base = event_base_new();
$event = event_new();

function read_cb($socket, $flag, $base) {
	fread($socket);
	fwrite("hello world\n");
}
function accept_cb($socket, $flag, $base) {
	$conn = stream_socket_accept($socket);
    stream_set_blocking($conn, 0);
	$event = event_new();
	event_set($event, $conn, EV_READ | EV_PERSIST, 'read_cb'), $base);
	event_base_set($event, $base);
	event_add($event);
}
event_set($event, $socket, EV_READ | EV_PERSIST, 'accept_cb', $base);
event_base_set($event, $base);
event_add($event);
event_base_loop($base);

server1.php

<?php
$serv=stream_socket_server("tcp://0.0.0.0:8000",$errno,?$errstr) or die("create server failed");
while(1) {
    $conn = stream_socket_accept($serv);
    if (pcntl_fork() == 0 ) {
        $request = fread($conn);
        //do some thing
        //$response = “hello world”;
        fwrite($response);
        fclose($conn);
        exit(0);
    }
}

server2.php

<?php
$serv=stream_socket_server("tcp://0.0.0.0:8000",$errno,$errstr) or die("create server failed");

for($i=0; $i < 32; $i ++) {
    if (pcntl_fork() == 0 ) {
        while(1) {
            $conn = stream_socket_accept($serv);
            if ($conn == false) continue;
            $request = fread($conn);          //do some thing
            //$response = “hello world”;
            fwrite($response);
            fclose($conn);
        } exit(0);
    }
}