--- /dev/null
+<?php
+/*
+ * $Id$
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the MIT license. For more information, see
+ * <http://www.doctrine-project.org>.
+ */
+
+namespace Doctrine\DBAL\Logging;
+
+/**
+ * Includes executed SQLs in a Debug Stack
+ *
+ *
+ * @link www.doctrine-project.org
+ * @since 2.0
+ * @version $Revision$
+ * @author Benjamin Eberlei <kontakt@beberlei.de>
+ * @author Guilherme Blanco <guilhermeblanco@hotmail.com>
+ * @author Jonathan Wage <jonwage@gmail.com>
+ * @author Roman Borschel <roman@code-factory.org>
+ */
+class DebugStack implements SQLLogger
+{
+ /** @var array $queries Executed SQL queries. */
+ public $queries = array();
+
+ /** @var boolean $enabled If Debug Stack is enabled (log queries) or not. */
+ public $enabled = true;
+
+ public $start = null;
+
+ public $currentQuery = 0;
+
+ /**
+ * {@inheritdoc}
+ */
+ public function startQuery($sql, array $params = null, array $types = null)
+ {
+ if ($this->enabled) {
+ $this->start = microtime(true);
+ $this->queries[++$this->currentQuery] = array('sql' => $sql, 'params' => $params, 'types' => $types, 'executionMS' => 0);
+ }
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function stopQuery()
+ {
+ if ($this->enabled) {
+ $this->queries[$this->currentQuery]['executionMS'] = microtime(true) - $this->start;
+ }
+ }
+}
+