事象
DB::statement('SELECT * FROM users');
を実行すると、以下のエラーが出る。
SQLSTATE[HY000]: General error: 2014 Cannot execute queries while other unbuffered queries are active. Consider using PDOStatement::fetchAll(). Alternatively, if your code is only ever going to run against mysql, you may enable query buffering by setting the PDO::MYSQL_ATTR_USE_BUFFERED_QUERY attribute. (SQL: SELECT * FROM users;)
解決方法
PHP PDOを利用している場合はPDO::ATTR_EMULATE_PREPARES=TRUEを設定するといい。
Laravelだと、
config/database.php
'mysql' => [
'driver' => 'mysql',
'host' => env('DB_HOST', '127.0.0.1'),
'port' => env('DB_PORT', '3306'),
'database' => env('DB_DATABASE', 'forge'),
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'unix_socket' => env('DB_SOCKET', ''),
'charset' => 'utf8mb4',
'collation' => 'utf8mb4_unicode_ci',
'prefix' => '',
'strict' => true,
'engine' => null,
'options' => [
PDO::ATTR_EMULATE_PREPARES => true
],
],
というふうにoptionsを付け加えると動く。