HHVM compatibility: implement declared interfaces

HHVM does not allow declaration of interface implementation without
real implementation of methods which parameters differs from parent
class.

lib/Doctrine/DBAL/Driver/PDOConnection.php

@@ -41,4 +41,39 @@ class PDOConnection extends PDO implements Connection
         $this->setAttribute(PDO::ATTR_STATEMENT_CLASS, array('Doctrine\DBAL\Driver\PDOStatement', array()));
         $this->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function prepare($prepareString)
+    {
+        return parent::prepare($prepareString);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function query()
+    {
+        $args = func_get_args();
+        $sql = $args[0];
+
+        return parent::query($sql);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function quote($input, $type=\PDO::PARAM_STR)
+    {
+        return parent::quote($input, $type);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function lastInsertId($name = null)
+    {
+        return parent::lastInsertId($name);
+    }
 }

lib/Doctrine/DBAL/Driver/PDOStatement.php

@@ -28,9 +28,9 @@ namespace Doctrine\DBAL\Driver;
 class PDOStatement extends \PDOStatement implements Statement
 {
     /**
-     * Private constructor.
+     * Protected constructor.
      */
-    private function __construct()
+    protected function __construct()
     {
     }
 
@@ -53,4 +53,52 @@ class PDOStatement extends \PDOStatement implements Statement
 
         return parent::setFetchMode($fetchMode, $arg2, $arg3);
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function bindValue($param, $value, $type = null)
+    {
+        return parent::bindValue($param, $value, $type);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function bindParam($column, &$variable, $type = null, $length = null)
+    {
+        return parent::bindParam($column, $variable, $type, $length);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function execute($params = null)
+    {
+        return parent::execute($params);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function fetch($fetchMode = null)
+    {
+        return parent::fetch($fetchMode);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function fetchAll($fetchMode = null)
+    {
+        return parent::fetchAll($fetchMode);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function fetchColumn($columnIndex = 0)
+    {
+        return parent::fetchColumn($columnIndex);
+    }
 }