Question

I am trying to use transactions in the Zend Framework and have a working script.

However, under testing I noticed that a try/catch function will catch any exception except one caused by the Mysql server being inactive.

Is this supposed to happen? If my server crashes I am worried that an ugly Zend exception would be returned and the application would cease to fail gracefully.

My code looks like this:

function insertInbox ($userId, $mail_id )
{   

    $db = Zend_Db_Table::getDefaultAdapter();  

    $table = new Application_Model_DbTable_Inbox; 

    try {
        $db->beginTransaction();

        $data = array (
                   'user_id'    => $userId,
                   'mail_id'    => $mail_id
                   );

        $insertedId[] = $table -> insert($data);

        $db -> commit();

        return $insertedId;
        }

    catch(exception $e){ 
        $db->rollback();
        return "insert failed";//.$e;
        }   
}

$tt = insertInbox ( 666,666);   
print_r($tt);

A duplicate entry of similar exception is caught and the temporary custom error message –insert failed– is returned. But if I turn off the database server the php catch does not capture this error:

**Message:** SQLSTATE[HY000] [2002] No connection could be made because the target machine actively refused it.

Any thoughts appreciated.

Answer 1

Some database extensions of PHP try to create a database connection when none is established and a function is called, that requires one. In this case $db->rollback() itself throws an exception.