Question

我将项目从旧主机移到了新主机我尝试了几次，但是每次尝试，Laravel都会显示此错误：

找不到驱动程序（SQL：从orders中选择*，而status未找到（PENDING，COMPLETED）中的值，并且api_order_id不是RAND（）限制15的空值）

我确定我已完全上传数据库，并且正确输入了数据库信息那么为什么会出现此错误？

Config / database.php代码：

<?php

return [

    /*
    |--------------------------------------------------------------------------
    | PDO Fetch Style
    |--------------------------------------------------------------------------
    |
    | By default, database results will be returned as instances of the PHP
    | stdClass object; however, you may desire to retrieve records in an
    | array format for simplicity. Here you can tweak the fetch style.
    |
    */

    'fetch' => PDO::FETCH_OBJ,

    /*
    |--------------------------------------------------------------------------
    | Default Database Connection Name
    |--------------------------------------------------------------------------
    |
    | Here you may specify which of the database connections below you wish
    | to use as your default connection for all database work. Of course
    | you may use many connections at once using the Database library.
    |
    */

    'default' => env('DB_CONNECTION', 'mysql'),

    /*
    |--------------------------------------------------------------------------
    | Database Connections
    |--------------------------------------------------------------------------
    |
    | Here are each of the database connections setup for your application.
    | Of course, examples of configuring each database platform that is
    | supported by Laravel is shown below to make development simple.
    |
    |
    | All database work in Laravel is done through the PHP PDO facilities
    | so make sure you have the driver for your particular database of
    | choice installed on your machine before you begin development.
    |
    */

    'connections' => [

        'sqlite' => [
            'driver' => 'sqlite',
            'database' => env('DB_DATABASE', database_path('database.sqlite')),
            'prefix' => '',
        ],

        'mysql' => [
            'driver' => 'mysql',
            'port' => env('DB_PORT', '3306'),
            'host' => 'localhost',
            'database' => 'my_db_name',
            'username' => 'db_user',
            'password' => 'db_pass',
            'charset' => 'utf8mb4',
            'collation' => 'utf8mb4_unicode_ci',
            'prefix' => '',
            'strict' => true,
            'engine' => null,
            'modes' => [
                'STRICT_TRANS_TABLES',
                'NO_ZERO_IN_DATE',
                'NO_ZERO_DATE',
                'ERROR_FOR_DIVISION_BY_ZERO',
                'NO_AUTO_CREATE_USER',
                'NO_ENGINE_SUBSTITUTION'
            ]
        ],

        'pgsql' => [
            'driver' => 'pgsql',
            'host' => env('DB_HOST', '127.0.0.1'),
            'port' => env('DB_PORT', '5432'),
            'database' => env('DB_DATABASE', 'forge'),
            'username' => env('DB_USERNAME', 'forge'),
            'password' => env('DB_PASSWORD', ''),
            'charset' => 'utf8',
            'prefix' => '',
            'schema' => 'public',
            'sslmode' => 'prefer',
        ],

    ],

    /*
    |--------------------------------------------------------------------------
    | Migration Repository Table
    |--------------------------------------------------------------------------
    |
    | This table keeps track of all the migrations that have already run for
    | your application. Using this information, we can determine which of
    | the migrations on disk haven't actually been run in the database.
    |
    */

    'migrations' => 'migrations',

    /*
    |--------------------------------------------------------------------------
    | Redis Databases
    |--------------------------------------------------------------------------
    |
    | Redis is an open source, fast, and advanced key-value store that also
    | provides a richer set of commands than a typical key-value systems
    | such as APC or Memcached. Laravel makes it easy to dig right in.
    |
    */

    'redis' => [

        'cluster' => false,

        'default' => [
            'host' => env('REDIS_HOST', '127.0.0.1'),
            'password' => env('REDIS_PASSWORD', null),
            'port' => env('REDIS_PORT', 6379),
            'database' => 0,
        ],

    ],

    'installed' => '1',
    'transfer_mode' => '%transfer_mode%',
];

.env文件代码：

DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=my_db_name
DB_USERNAME=db_user
DB_PASSWORD=db_pass

Answer 1

MySQL是数据库，而php使用pdo_mysql之类的扩展名来连接PHP和MySQL。首先，驱动程序和扩展名不同。驱动程序是mysqlnd或mysqlnd，而扩展名是pdo_mysql或nd_pdo_mysql等。首先检查驱动程序是否正确安装。

检查扩展名的步骤：

检入phpinfo()是否看到pdo_mysql已启用。
有时托管托管（大多数带有cpanel的托管）的sql扩展默认情况下处于启用状态。在php扩展部分中检入phpinto中的_mysql。检查是否看到其他启用的扩展名，例如nd_pdo_mysql。如果是这种情况，那么您会发现有冲突。您需要先禁用它，然后尝试再次启用pdo_mysql。
重新启动您的PHP服务，如果可以，请重试。

找不到驱动程序

1 个答案: