socket_with_connect_and_read_timeout.php

<?php
$connectTimeout = 0.003;
$timeout = 0.005;
$ip = '';
$port = 0;
$key = 'foo';

$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_set_option($socket, SOL_SOCKET, SO_SNDTIMEO, array("sec"=>0, "usec"=> $connectTimeout * 1000000));

$r = socket_connect($socket, $ip, $port);
echo socket_strerror(socket_last_error()), " ", socket_last_error(), PHP_EOL;

$command = "LRANGE $key 0 10\r\nQUIT\r\n";
socket_send($socket, $command, strlen($command), MSG_EOF);
echo socket_strerror(socket_last_error()), " ", socket_last_error(), PHP_EOL;

socket_set_option($socket, SOL_SOCKET, SO_RCVTIMEO, array("sec"=>0, "usec"=> $timeout * 1000000));
$output = "";
while($b = socket_recv($socket, $buf, 1024, MSG_WAITALL)) {
    $output .= $buf;
}
echo socket_strerror(socket_last_error()), " ", socket_last_error(), PHP_EOL;
echo $buf, " ", $output;