How to count documents in MongoDB using PHP?

@haylee.mertz 

To count documents in MongoDB using PHP, you can use the count() method provided by the MongoDB PHP driver. Here's an example code snippet:

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23

<?php
// Connect to MongoDB
$mongo = new MongoDBDriverManager("mongodb://localhost:27017");

// Specify the database and collection
$database = "mydb";
$collection = "mycollection";

// Define the filter (optional)
$filter = [];

// Define the options (optional)
$options = [];

// Create a query object
$query = new MongoDBDriverQuery($filter, $options);

// Execute the query and retrieve the count
$count = $mongo->executeQuery("$database.$collection", $query)->toArray()[0]->n;

// Output the count
echo "The collection $collection has $count documents.";
?>

In this example, we first connect to the MongoDB server using the MongoDBDriverManager class. Then, we specify the database and collection that we want to count documents in. Optionally, we can define a filter and options to apply to the count operation.

Next, we create a MongoDBDriverQuery object with the filter and options, and execute it using the executeQuery() method of the $mongo object. The result is an array of stdClass objects, where the first object contains a property n that represents the count of documents in the collection.

Finally, we retrieve the count value from the first object and output it to the user.