diff --git a/Mysql/PDO.php b/Mysql/PDO.php
index caa92df..c200be1 100644
--- a/Mysql/PDO.php
+++ b/Mysql/PDO.php
@@ -74,6 +74,8 @@ class PDO implements StopHeartbeatCheck
 	 */
 	public function inTransaction(): bool
 	{
+		echo $this->_transaction, ' ', __FUNCTION__, PHP_EOL;
+
 		return $this->_transaction > 0;
 	}
 
@@ -140,6 +142,8 @@ class PDO implements StopHeartbeatCheck
 			$this->_pdo()->beginTransaction();
 		}
 		$this->_transaction++;
+
+		echo $this->_transaction, ' ', __FUNCTION__, PHP_EOL;
 	}
 
 
@@ -148,6 +152,8 @@ class PDO implements StopHeartbeatCheck
 	 */
 	public function commit()
 	{
+		echo $this->_transaction, ' ', __FUNCTION__, PHP_EOL;
+
 		$this->_transaction--;
 		if ($this->_transaction == 0) {
 			$this->_pdo()->commit();
@@ -160,6 +166,8 @@ class PDO implements StopHeartbeatCheck
 	 */
 	public function rollback()
 	{
+		echo $this->_transaction, ' ', __FUNCTION__, PHP_EOL;
+
 		$this->_transaction--;
 		if ($this->_transaction == 0) {
 			$this->_pdo()->rollBack();