PHP & MongoDB – Display Collections
First step to do any operation is to create a Manager instance.
// Connect to MongoDB using Manager Instance $manager = new MongoDBDriverManager("mongodb://localhost:27017");
Second step is to prepare and execute a command on a database to show the list of collections available.
// Create a Command Instance $collectionList = new MongoDBDriverCommand(["listCollections" => 1]); // Execute the command on the database $cursor = $manager->executeCommand("myDb", $collectionList);
Example
Try the following example to list collections of a database in MongoDB server −
Copy and paste the following example as mongodb_example.php −
<?php try { // connect to mongodb $manager = new MongoDBDriverManager("mongodb://localhost:27017"); // Create a Command Instance $collectionList = new MongoDBDriverCommand(["listCollections" => 1]); // Execute the command on the database $cursor = $manager->executeCommand("myDb", $collectionList); $collections = $cursor->toArray(); foreach ($collections as $collection) { echo $collection->name . "<br/>"; } } catch (MongoDBDriverExceptionException $e) { echo "Exception:", $e->getMessage(), "n"; } ?>
Output
Access the mongodb_example.php deployed on apache web server and verify the output.
sampleCollection