Saya mencoba mencari solusi untuk masalah yang sama dan saya menemukan jawaban berikutnya:
class NPDO {
private $pdo;
private $params;
public function __construct() {
$this->params = func_get_args();
$this->init();
}
public function __call($name, array $args) {
return call_user_func_array(array($this->pdo, $name), $args);
}
// The ping() will try to reconnect once if connection lost.
public function ping() {
try {
$this->pdo->query('SELECT 1');
} catch (PDOException $e) {
$this->init(); // Don't catch exception here, so that re-connect fail will throw exception
}
return true;
}
private function init() {
$class = new ReflectionClass('PDO');
$this->pdo = $class->newInstanceArgs($this->params);
}
}
Cerita lengkapnya di sini:https://terenceyim. wordpress.com/2009/01/09/adding-ping-function-to-pdo/
Seseorang berpikir untuk menggunakan PDO::ATTR_CONNECTION_STATUS , tetapi dia menemukan bahwa:"$db->getAttribute(PDO::ATTR_CONNECTION_STATUS)
terus membalas “Localhost melalui soket UNIX” bahkan setelah menghentikan mysqld".