yii2使用代码自动生成数据库表对应migrations

1.首先配置db数据库，例：

<?php

return [
    'class' => 'yii\db\Connection',
    'dsn' => 'mysql:host=localhost;dbname=dbname',
    'username' => '',
    'password' => '',
    'charset' => 'utf8mb4',
];

2.在console下面实现脚本：

<?php

namespace console\controllers;

use Yii;
use yii\console\Controller;
use scotthuangzl\export2excel\Export2ExcelBehavior;


class ToolsController extends Controller
{
	public function actionIndex()
	{
        //时间戳
        $now = time();
        echo "\ndate:".date("Y-m-d H:i:s")."\n";
    }


    public function actionMig()
    {
        $model = \Yii::$app->db->createCommand("select table_name from information_schema.tables where table_schema='letsbook' and table_type='base table'");
        $posts = $model->queryAll();

        $str = 'm200610_110612_create_all_tables.php';
        $myfile = fopen($str, "w") or die("Unable to open file!");
        $txt = "<?php
            use yii\db\Migration;
 
            class m200610_110612_create_all_tables extends Migration
            {
                public function safeUp()
                {
            ";

        // create tables
        foreach ($posts as  $key => $item) {
            $sql = "show create table ".$item['table_name']." ";
            $keys = \Yii::$app->db->createCommand($sql);
            $keyposts = $keys->queryOne();
            $txt .= '$this->execute('."         \"".$keyposts['Create Table']."\");
            ";
        }

        $txt .= "}
                public function safeDown()
                {
                ";

        // drop tables
        foreach ($posts as  $key => $item) {
            $txt .=  '$this->dropTable('."'".$item['table_name']."');
            ";
        }

        $txt .= "
                }
            }
            ?>";
        fwrite($myfile, $txt);
        fclose($myfile);
        print_r('success');
    }
}

最后运行该方法接口，输出“success”，检查web下生成了多个migrations文件，可以配置生成路径到mirations目录下，也可以生成后复制到migrations目录下，方便使用数据库转移。