How to access a property of a PHP object?

Question

PHP

Please tell me, some unexpected problem arose:

$db = new DB\Mongo('mongodb://localhost:27017', 'test');
$sessions = new DB\Mongo\Mapper($db,'sessions');
$sessionsList = $sessions->find(array("sid"=>$sid));
var_dump($sessionsList[0]->expired);

Output:

object(MongoDate)#17 (2) {
  ["sec"]=>
  int(1438577420)
  ["usec"]=>
  int(0)
}

And if so:

$sec = $sessionsList[0]->expired;
var_dump($sec);

It won't output anything!
How can I set $sessionsList[0]->expired->sec to a variable?
The logs are empty, no errors..

Answer 1

var_dump physically (ext/standard/var.c, php_var_dump function) cannot work and output nothing.
If you really don't have any stdout, then you're crashing somewhere else. Run in CLI, there are fewer logs to watch. Check the return code of the script.