Mongodb php backup collections

Question

I have a problem, my code does not work exactly as I want. I need to create a backup and restore. And that is my problem; My new collection is not identical. Wrong data form:

My backup

$db = $m->$dbname;  
  try{
$backup1 = $db->people->find();
$text1=json_encode(iterator_to_array($backup1));
$people = 'people.txt';
if ($text1 ){
file_put_contents($people, $text1,  LOCK_EX);
echo 'complete';
}
else echo 'error';

My restore

$db = $m->$dbname;  
  try{   
$collection = $db->people1; 
$file = file_get_contents('people.txt', FILE_USE_INCLUDE_PATH);
if ($file){
$file = json_decode($file);
foreach ($file as $id => $item) {
   $collection->insert($item);
}
echo 'Restore complete';
}
else echo 'Error';

Answer 1

Use mongodump and mongorestore — Back Up and Restore with MongoDB Tools