$result_dir = CACHE_DIR . DS . 'phantomjs_results';
if ($handle = opendir($result_dir)) {
$i = 0;
while (false !== ($entry = readdir($handle))) {
if (preg_match('/^account_craw/', $entry) && $i < $how_many_processed_once) {
$file = $result_dir . DS . $entry;
// get created date from file name
$matches = array();
preg_match('/_((\\d+)\\-\\d+\\-\\d+)\\-/', $file, $matches);
$date = $matches[1];
$year = $matches[2];
// get wechat_id from file name
$matches = array();
preg_match('/account_crawl_([^_]+)_/', $file, $matches);
$wechat_id = $matches[1];
$wechat_account = WechatAccount::findByWechatId($wechat_id);
if ($wechat_account == null) {
$log = new Log('wechat_account', Log::ERROR, 'Collect error: can not find wechat_account with wechat_id:' . $wechat_id);
unlink($file);
exit;
}
// parse html
load_library_simple_html_dom();
$html = file_get_contents($file);
unlink($file);
if (strpos($html, '[Error]') !== FALSE) {
$log = new Log('wechat_account', Log::ERROR, $html);
$log->save();
} else {
$dom = str_get_html($html);
foreach ($dom->find('.wx-rb3') as $article) {
