eject.php

<?php
require_once('keys.php');
/**
keys.phpを設置して twitter tokenなどを用意しておく
define('CONSUMER_KEY'       , '*********');
define('CONSUMER_SECRET'    , '*********');
define('OAUTH_TOKEN'        , '***-******');
define('OAUTH_TOKEN_SECRET' , '*********');
 *
 */
define('YOUR_SCREEN_NAME', 'arzzup');
define('MATCH_PATTERN', '#(eject|[起お]き[ろ|て])#u');

$url = 'https://userstream.twitter.com/1.1/user.json';
$method = 'GET';

// パラメータ
$oauth_parameters = array(
    'oauth_consumer_key' => CONSUMER_KEY,
    'oauth_nonce' => microtime(),
    'oauth_signature_method' => 'HMAC-SHA1',
    'oauth_timestamp' => time(),
    'oauth_token' => OAUTH_TOKEN,
    'oauth_version' => '1.0',
);
 
$a = $oauth_parameters;
ksort($a);
$base_string = implode('&', array(
    rawurlencode($method),
    rawurlencode($url),
    rawurlencode(http_build_query($a, '', '&', PHP_QUERY_RFC3986))
));
$key = implode('&', array(rawurlencode(CONSUMER_SECRET), rawurlencode(OAUTH_TOKEN_SECRET)));
$oauth_parameters['oauth_signature'] = base64_encode(hash_hmac('sha1', $base_string, $key, true));
 
 
$fp = fsockopen("ssl://userstream.twitter.com", 443);
if ($fp) {
    fwrite($fp, "GET " . $url . " HTTP/1.1\r\n"
                . "Host: userstream.twitter.com\r\n"
                . 'Authorization: OAuth ' . http_build_query($oauth_parameters, '', ',', PHP_QUERY_RFC3986) . "\r\n"
                . "\r\n");
    while (!feof($fp)) {
        $res = fgets($fp);
		$res = json_decode($res, true);
        echo $res['text'];
        // テキスト判定部分
        if (preg_match('#' . YOUR_SCREEN_NAME . '#i', $res['in_reply_to_screen_name']) && preg_match(MATCH_PATTERN, $res['text'])) {
            `eject`;
        }
    }
    fclose($fp);
}