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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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