$projectStep = array(
  'report_id' => 1,
  'space' => 1,
  'location' => array(
    'type' => 'Point',
    'coordinates' => array('$longitude', '$latitude')
  ),
  'altitude' => 1,
  'data' => 1
);

foreach ($collections as $coll) {
  $outname = "{$coll}_geospatial";

  $pipeline = array(
    array('$project' => $projectStep ),
    array('$out' => $outname)
  );

  $coll = $db->selectCollection($collection);
  $coll->aggregate($pipeline);
}

exception 'MongoDBDriverExceptionConnectionTimeoutException' with message 'Failed to send "aggregate" command with database: Failed to read 4 bytes: socket error or timeout'