<?php

$host = '127.0.0.1';
$db   = 'cns';
$user = 'root';
$pass = '';
$charset = 'utf8mb4';

$dsn = "mysql:host=$host;dbname=$db;charset=$charset";
$options = [
    PDO::ATTR_ERRMODE            => PDO::ERRMODE_EXCEPTION,
    PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
    PDO::ATTR_EMULATE_PREPARES   => false,
];
try {
     $pdo = new PDO($dsn, $user, $pass, $options);

     $start = strtotime('-1 month');
     for ($i = 0; $i < 200000; $i++) {
      for ($t = 1; $t <= 150; $t++) {
        $pdo->query('
         insert into
          history_datas
         set
          created_at = "'.date('Y-m-d H:i:s', $start++).'",
          coins_id = '.$t.',
        ');
       }die;
      }
     }
} catch (\PDOException $e) {
     throw new \PDOException($e->getMessage(), (int)$e->getCode());
}