Question

I have the following code for running a mongo query, Where the ‘mongotester’ is the DB name and ‘categories’ is the collection name

I am using PECL mongodb library

$m = new Mongo();
$db = $m->selectDB('mongotester');
$a = $db->execute('return mongotester.categories.count();');
echo "<pre>";
var_dump($a);
echo "<pre>";

When I am running this, I am getting the following error,

array(3) {
   ["errno"]=>
   float(-3)
  ["errmsg"]=>
     string(78) "invoke failed: JS Error: ReferenceError: mongotester is not defined     nofile_a:0"
  ["ok"]=>
  float(0)
}

Please help me to correct this.

thanks

phpqa.in

Answer 1

Rather than trying to execute() javascript for a count, you can reference the collection directly, eg:

$m = new Mongo();
$db = $m->selectDB('mongotester');
$a = $db->categories->count();
echo "<pre>";
var_dump($a);
echo "<pre>";

The var_dump in this case is just going to show int(0) unless you’ve actually inserted some data into the categories collection.