年末だしSlack上のHubotの今年一年の労をねぎらってあげる ref: http://qiita.com/s-kiriki/items/a39a512bc65c1f4c3871

slackbot-contribution.php

<?php 


if (!getenv(SLACK_API_TOKEN)) {
    exit('You must set env SLACK_API_TOKEN');
}

ini_set('date.timezone', 'Asia/Tokyo');


{// You can change belows
    $slackbot_name = 'wanko';
    $bot_cmd_arr = array('ote', 'deploy', 'merge', 'update ref', 'assign', 'soba', 'container', 'omikuji', 'repo aliase');
    $start_date = '2014-01-01';
    $end_date = '2014-12-26';
}


$data = getMessage($slackbot_name);
$pageCnt = $data['pageCnt'];

$callCnt = 0;
$callCntPerCmd = array();
$callCntPerUser = array();


for ($page = 1; $page <= $pageCnt; $page++) {

    print $page. '/'. $pageCnt. "\r";

    $data = getMessage($slackbot_name, $page);
    $messages = $data['messages'];

    if (!$messages) {
        continue;
    }

    foreach ($messages as $message){

        //期間内かチェック
        if ( $message['ts'] < strtotime($start_date) || $message['ts'] > strtotime($end_date) ) {
            continue;
        }

        $isValid = false;
        //対象コマンドかチェック
        foreach ($bot_cmd_arr as $bot_cmd) {
            if(preg_match("/^{$slackbot_name} {$bot_cmd}/", $message['text'])){
                $callCnt++;
                $callCntPerCmd[$bot_cmd]++;
                $callCntPerUser[$message['username']]++;                
                break;
            }
        }

    }
}

arsort($callCntPerCmd);
arsort($callCntPerUser);

echo $callCnt. PHP_EOL;
echo "{$slackbot_name} contributed {$callCnt} times!!!". PHP_EOL;
echo PHP_EOL;
echo '[ Popular command ranking ]'. PHP_EOL;
foreach ($callCntPerCmd as $cmd => $cnt) {
    echo "{$cmd} : {$cnt} times". PHP_EOL;
}
echo PHP_EOL;
echo PHP_EOL;
foreach ($callCntPerUser as $user => $cnt) {
    echo "{$user} : {$cnt} times". PHP_EOL;
}

function getMessage($slackbot_name, $page = null){

    $url = 'https://slack.com/api/search.messages';
    $params = array(
        'token' => getenv(SLACK_API_TOKEN),
        'query' => $slackbot_name,
        'sort' => 'timestamp'
    );

    if ($page) {
        $params['page'] = $page;
    }

    $data = http_build_query($params);
    $url = ($data != '')?$url.'?'.$data:$url;

    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
    curl_setopt($ch, CURLOPT_TIMEOUT, 2);
    $res = curl_exec($ch);

    $resArr = json_decode($res, true);
    return array('pageCnt'=>$resArr['messages']['pagination']['page_count'], 'messages'=>$resArr['messages']['matches']);
}