tmhOAuth( https://github.com/themattharris/tmhOAuth ) が必要です

pvpbot.php

<?php

require "/tmhOAuth.php";

$consumer_key = "";
$consumer_secret = "";
$user_token = "";
$user_secret = "";

$tmhOAuth = new tmhOAuth(
	array(
		"consumer_key" => $consumer_key,
		"consumer_secret" => $consumer_secret,
		"user_token" => $user_token,
		"user_secret" => $user_secret
	)
);

$method = "https://userstream.twitter.com/2/user.json";
$params = array();

$tmhOAuth -> streaming_request("POST", $method, $params, "callback", false);

function callback($data, $length, $metrics){
	global $tmhOAuth;
	@$res = json_decode($data);
	if(isset($res -> text)){
		$text = $res -> text.PHP_EOL;
		$pattern = "/^\s*@iku_iku_ikura\s+(Sabatora|Walls1|ZD|Blitz|Chatora|CTW|Chatora 2|Paintball)\s*$/";
		$result = preg_match($pattern, $text, $m);
		if($result == 1){
			$servers = json_decode(file_get_contents("https://pvp.minecraft.jp/servers.json")) -> servers;
			foreach($servers as $server){
				if($server -> Server -> name == $m[1]){
					$tmhOAuth -> request("POST", $tmhOAuth->url("1.1/statuses/update"), array(
						"status" => "@".$res->user->screen_name." ".$server -> Server -> name." の現在のマップは ".$server -> Server -> currentMap." で、 ".$server -> Server -> player_count." 名のプレイヤーがオンラインです。次のマップは ".$server -> Server -> nextMap." です。", 
						"in_reply_to_status_id" => $res->id_str
					));
				}
			}
		}
	}
}