could not find driver - php

Question

I moved my project from my old host to my new host
I tried some times but every time I tried, Laravel showed this error:
could not find driver (SQL: select * from orders where status not
in (PENDING, COMPLETED) and api_order_id is not null order by RAND() limit 15)
I'm sure I uploaded my database fully and the I put my database information correctly
So why this error appeared?
Config/database.php codes:
<?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 file codes:
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 is the database and php uses extensions like pdo_mysql to connect PHP and MySQL. Firstly driver and extensions are different. Drivers are mysqlnd or mysqlnd whereas extensions are pdo_mysql or nd_pdo_mysql etc. First check if drivers are installed properly.
Steps to check fo extensions :
Check in phpinfo() if you see pdo_mysql is enabled.
Sometimes managed hosting(mostly ones with cpanel) have their sql extensions enabled by default. Check in phpinto for _mysql in php extensions section. Check if you see any other extension enabled like nd_pdo_mysql. If it's the case then you will notice a conflict. You need to disable it first and then attempt to enable the pdo_mysql again.
Restart your PHP service and you can try again if it works.