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备份Model：
    
   
    
    
    
   
    
namespace backend\models;
use Yiisoft\Yii\ActiveRecord;
class DbModel extends ActiveRecord
{
    protected $dbdata_path = "dbdata";
    
    public function init()
    {
        header("Content-type: text/html;charset=utf-8");
    }
    /* 获取所有数据表 */
    protected function getTables()
    {
        return Yii::$app->db->getSchema()->getTableNames();
    }
    /* 备份地址 */
    protected function getBackUpPath()
    {
        $path = dirname(dirname(__FILE__)) . '/' . $this->dbdata_path;
        if (!file_exists($path)) {
            @mkdir($path, 0777);
        }
        return $path;
    }
    /* 文件名称 */
    protected function makeFileName()
    {
        $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
        $name = '';
        for ($i = 0; $i < 5; $i++) {
            $name .= $chars[mt_rand(0, strlen($chars) - 1)];
        }
        return date("Ymd") . '_' . $name . '.sql';
    }
    /* 给字段、表名加上` */
    protected function addStyle($str)
    {
        return "`{$str}`";
    }
    /* 获取表结构 */
    protected function getTableStructure($table)
    {
        $data = Yii::$app->db->createCommand('SHOW CREATE TABLE ' . $this->addStyle($table))->queryAll();
        return $data[0]['Create Table'];
    }
    /* 获取表数据 */
    protected function getTableDatas($table)
    {
        $data = Yii::$app->db->createCommand('SELECT * FROM ' . $this->addStyle($table))->queryAll();
        $fields = '';
        $values = '';
        $content = '';
        foreach ($data as $key => $val) {
            $fields = array_keys($val);
            $values = array_values($val);
            $sql = "INSERT INTO " . $this->addStyle($table) . "(";
            $sql .= "`" . implode("`, `", $fields) . "`) VALUES (";
            $sql .= "'" . implode("', '", $values) . "'); \r\n";
            $content .= $sql;
        }
        return $content;
    }
    /* 备份数据库 */
    public function backUp()
    {
        $tables = $this->getTables();
        $path = $this->getBackUpPath();
        $fileName = $this->makeFileName();
        $content = "SET FOREIGN_KEY_CHECKS=0; \r\n";
        foreach ($tables as $key => $val) {
            $content .= "DROP TABLE IF EXISTS " . $this->addStyle($val) . "; \r\n";
            $content .= $this->getTableStructure($val) . "; \r\n";
            $content .= $this->getTableDatas($val) . "\r\n";
        }
        $back_path = $this->getBackUpPath();
        $file_name = $this->makeFileName();
        $file = $back_path . '/' . $file_name;
        $fp = fopen($file, 'w');
        @fwrite($fp, $content);
        fclose($fp);
    }
    /* 获取所有的sql文件 */
    public function getSqlFiles()
    {
        $path = dirname(dirname(__FILE__)) . '/' . $this->dbdata_path;
        $sqls = [];
        if (file_exists($path)) {
            $dir_handle = @opendir($path);
            while ($file = @readdir($dir_handle)) {
                $file_info = pathinfo($file);
                if ($file_info['extension'] == 'sql') {
                    $sql['name'] = $file;
                    $sql['create_time'] = date('Y-m-d', filectime($path . '/' . $file));
                    $sqls[] = $sql;
                }
            }
        }
        return $sqls;
    }
    /** 还原数据库 */
    public function recoverSqlFile($sqlFileName)
    {
        $path = dirname(dirname(__FILE__)) . '/' . $this->dbdata_path;
        $sqlFile = $path . '/' . $sqlFileName;
        if (file_exists($sqlFile)) {
            $sqls = file_get_contents($sqlFile);
            Yii::$app->db->createCommand($sqls)->execute();
        }
    }
    /* 删除数据备份 */
    public function deleteSqlFile($sqlFileName)
    {
        $path = dirname(dirname(__FILE__)) . '/' . $this->dbdata_path;
        $sqlFile = $path . '/' . $sqlFileName;
        if (file_exists($sqlFile)) {
            @unlink($sqlFile);
        }
    }
}
   
   
   
   
   
   
   
   
控制器：
   
   
public function actionIndex()
{
    $dbModel = new DbModel();
    $dataProvider = $dbModel->getSqlFiles();
    return $this->render('index', [
        'dataProvider' => $dataProvider,
    ]);
}
public function actionCreate()
{
    $dbModel = new DbModel();
    $dbModel->backUp();
    return $this->redirect(['index']);
}
public function actionUpdate($file)
{
    $dbModel = new DbModel();
    $dbModel->recoverSqlFile($file);
    return $this->redirect(['index']);
}
public function actionDelete($file)
{
    $dbModel = new DbModel();
    $dbModel->deleteSqlFile($file);
    return $this->redirect(['index']);
}
   
   
   
   
   
   
   

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