如何在 Laravel 中备份/导出连接的 Database database.sql 文件？

Question

我已经查看了这个问题的所有可用主题，但没有得到任何准确的答案......有人清楚备份 .sql 文件中的当前数据库并下载它吗？

Answer 1

// 代码

public function our_backup_database(){

        //ENTER THE RELEVANT INFO BELOW
        $mysqlHostName      = env('DB_HOST');
        $mysqlUserName      = env('DB_USERNAME');
        $mysqlPassword      = env('DB_PASSWORD');
        $DbName             = env('DB_DATABASE');
        $backup_name        = "mybackup.sql";
        $tables             = array("users","messages","posts"); //here your tables...

        $connect = new \PDO("mysql:host=$mysqlHostName;dbname=$DbName;charset=utf8", "$mysqlUserName", "$mysqlPassword",array(\PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES 'utf8'"));
        $get_all_table_query = "SHOW TABLES";
        $statement = $connect->prepare($get_all_table_query);
        $statement->execute();
        $result = $statement->fetchAll();


        $output = '';
        foreach($tables as $table)
        {
         $show_table_query = "SHOW CREATE TABLE " . $table . "";
         $statement = $connect->prepare($show_table_query);
         $statement->execute();
         $show_table_result = $statement->fetchAll();

         foreach($show_table_result as $show_table_row)
         {
          $output .= "\n\n" . $show_table_row["Create Table"] . ";\n\n";
         }
         $select_query = "SELECT * FROM " . $table . "";
         $statement = $connect->prepare($select_query);
         $statement->execute();
         $total_row = $statement->rowCount();

         for($count=0; $count<$total_row; $count++)
         {
          $single_result = $statement->fetch(\PDO::FETCH_ASSOC);
          $table_column_array = array_keys($single_result);
          $table_value_array = array_values($single_result);
          $output .= "\nINSERT INTO $table (";
          $output .= "" . implode(", ", $table_column_array) . ") VALUES (";
          $output .= "'" . implode("','", $table_value_array) . "');\n";
         }
        }
        $file_name = 'database_backup_on_' . date('y-m-d') . '.sql';
        $file_handle = fopen($file_name, 'w+');
        fwrite($file_handle, $output);
        fclose($file_handle);
        header('Content-Description: File Transfer');
        header('Content-Type: application/octet-stream');
        header('Content-Disposition: attachment; filename=' . basename($file_name));
        header('Content-Transfer-Encoding: binary');
        header('Expires: 0');
        header('Cache-Control: must-revalidate');
           header('Pragma: public');
           header('Content-Length: ' . filesize($file_name));
           ob_clean();
           flush();
           readfile($file_name);
           unlink($file_name);


}

// 路由

Route::get('/our_backup_database', 'YourControllerController@our_backup_database')->name('our_backup_database');

//看法

        <form action="{{ route('our_backup_database') }}" method="get">
            <button style="submit" class="btn btn-primary"> download</button>
        </form>

Answer 2

Route::get('/backupdb', function () {
    $DbName             = env('DB_DATABASE');
    $get_all_table_query = "SHOW TABLES ";
    $result = DB::select(DB::raw($get_all_table_query));

    $prep = "Tables_in_$DbName";
    foreach ($result as $res){
        $tables[] =  $res->$prep;
    }



    $connect = DB::connection()->getPdo();

    $get_all_table_query = "SHOW TABLES";
    $statement = $connect->prepare($get_all_table_query);
    $statement->execute();
    $result = $statement->fetchAll();


    $output = '';
    foreach($tables as $table)
    {
        $show_table_query = "SHOW CREATE TABLE " . $table . "";
        $statement = $connect->prepare($show_table_query);
        $statement->execute();
        $show_table_result = $statement->fetchAll();

        foreach($show_table_result as $show_table_row)
        {
            $output .= "\n\n" . $show_table_row["Create Table"] . ";\n\n";
        }
        $select_query = "SELECT * FROM " . $table . "";
        $statement = $connect->prepare($select_query);
        $statement->execute();
        $total_row = $statement->rowCount();

        for($count=0; $count<$total_row; $count++)
        {
            $single_result = $statement->fetch(\PDO::FETCH_ASSOC);
            $table_column_array = array_keys($single_result);
            $table_value_array = array_values($single_result);
            $output .= "\nINSERT INTO $table (";
            $output .= "" . implode(", ", $table_column_array) . ") VALUES (";
            $output .= "'" . implode("','", $table_value_array) . "');\n";
        }
    }
    $file_name = 'database_backup_on_' . date('y-m-d') . '.sql';
    $file_handle = fopen($file_name, 'w+');
    fwrite($file_handle, $output);
    fclose($file_handle);
    header('Content-Description: File Transfer');
    header('Content-Type: application/octet-stream');
    header('Content-Disposition: attachment; filename=' . basename($file_name));
    header('Content-Transfer-Encoding: binary');
    header('Expires: 0');
    header('Cache-Control: must-revalidate');
    header('Pragma: public');
    header('Content-Length: ' . filesize($file_name));
    ob_clean();
    flush();
    readfile($file_name);
    unlink($file_name);

});

Answer 3

我调整了 @Abdelhakim Ezzahouri 的代码，使用 Laravel 现有的数据库连接，而不是再次连接、输入凭据并安装 PDO（如果尚未安装）。

Route::get('db_dump', function () {
    /*
    Needed in SQL File:

    SET GLOBAL sql_mode = '';
    SET SESSION sql_mode = '';
    */
    $get_all_table_query = "SHOW TABLES";
    $result = DB::select(DB::raw($get_all_table_query));

    $tables = [
        'admins',
        'migrations',
    ];

    $structure = '';
    $data = '';
    foreach ($tables as $table) {
        $show_table_query = "SHOW CREATE TABLE " . $table . "";

        $show_table_result = DB::select(DB::raw($show_table_query));

        foreach ($show_table_result as $show_table_row) {
            $show_table_row = (array)$show_table_row;
            $structure .= "\n\n" . $show_table_row["Create Table"] . ";\n\n";
        }
        $select_query = "SELECT * FROM " . $table;
        $records = DB::select(DB::raw($select_query));

        foreach ($records as $record) {
            $record = (array)$record;
            $table_column_array = array_keys($record);
            foreach ($table_column_array as $key => $name) {
                $table_column_array[$key] = '`' . $table_column_array[$key] . '`';
            }

            $table_value_array = array_values($record);
            $data .= "\nINSERT INTO $table (";

            $data .= "" . implode(", ", $table_column_array) . ") VALUES \n";

            foreach($table_value_array as $key => $record_column)
                $table_value_array[$key] = addslashes($record_column);

            $data .= "('" . implode("','", $table_value_array) . "');\n";
        }
    }
    $file_name = __DIR__ . '/../database/database_backup_on_' . date('y_m_d') . '.sql';
    $file_handle = fopen($file_name, 'w + ');

    $output = $structure . $data;
    fwrite($file_handle, $output);
    fclose($file_handle);
    echo "DB backup ready";
});