gistfile1.php[345]

<?php

class MyPDOStatement extends PDOStatement
{
  protected $pdo;
  protected function __construct(PDO $pdo)
  {
    $this->pdo = $pdo;
  }

  public function __destruct()
  {
    unset($this->pdo);
  }
}

$dbh = new PDO('mysql:dbname=op3_debian;host=localhost', 'root', '');
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$dbh->setAttribute(PDO::ATTR_STATEMENT_CLASS, array('MyPDOStatement', array($dbh)));

$stmt = $dbh->prepare("SELECT * from member");
$stmt->execute();
$stmt->closeCursor();

unset($dbh);
unset($stmt);

sleep(10);