php7 Modules/main.php bug fix

202a203,206
***
// init statistic
if (!isset(\Statistics\Lib\Cache::$statisticDataCache['statistic'][$ip])) {
\Statistics\Lib\Cache::$statisticDataCache['statistic'] = array();
}

222c226
***
$time_line = ceil($time_line/300)*300;
$time_line = intval(ceil($time_line/300)*300);

232,235c236,239
***

$st_data[$time_line]['suc_count'] += $suc_count;
$st_data[$time_line]['suc_cost_time'] += $suc_cost_time;
$st_data[$time_line]['fail_count'] += $fail_count;
$st_data[$time_line]['fail_cost_time'] += $fail_cost_time;

---

$st_data[$time_line]['suc_count'] += intval($suc_count);
$st_data[$time_line]['suc_cost_time'] += intval($suc_cost_time);
$st_data[$time_line]['fail_count'] += intval($fail_count);
$st_data[$time_line]['fail_cost_time'] += intval($fail_cost_time);`