In wp-config.php add the next lines with mysql DEV or PRO data.

Wordpress Localhost Dev Prod .php

// In the parent folder where wordpress is located, add the file 'environment' with the words 'DEVELOPMENT', 'PRODUCTION',
//  or the environment label that you want.

// In wp-config.php add:

if( ! defined( 'WP_ENVIRONMENT' ) ) {
    $dir_environment = dirname( dirname( __FILE__ ) );
    define( 'WP_ENVIRONMENT', empty( $dir_environment ) ?
        'PRODUCTION' : file_get_contents( $dir_environment . 'environment' ) );
}

$WP_DB_DATA = array(
    'DEVELOPMENT' => array( 'db_name' => 'local_db_name', 'db_user' => 'root', 'db_pass' => '' ),
    'PRODUCTION'  => array( 'db_name' => 'prod_db_name', 'db_user' => 'prod_db_user', 'db_pass' => 'prod_db_pass' ),
);

// Then, the lines to define the mysql data looks like:

define('DB_NAME', $WP_DB_DATA[ WP_ENVIRONMENT ][ 'db_name' ] );

define('DB_USER', $WP_DB_DATA[ WP_ENVIRONMENT ][ 'db_user' ] );

define('DB_PASSWORD', $WP_DB_DATA[ WP_ENVIRONMENT ][ 'db_pass' ] );