- PHP & MongoDB Tutorial
- PHP & MongoDB - Home
- PHP & MongoDB - Overview
- PHP & MongoDB - Environment Setup
- PHP & MongoDB Examples
- PHP & MongoDB - Connect Database
- PHP & MongoDB - Show Databases
- PHP & MongoDB - Drop Database
- PHP & MongoDB - Create Collection
- PHP & MongoDB - Drop Collection
- PHP & MongoDB - Display Collections
- PHP & MongoDB - Insert Document
- PHP & MongoDB - Select Document
- PHP & MongoDB - Update Document
- PHP & MongoDB - Delete Document
- PHP & MongoDB - Embedded Documents
- PHP & MongoDB - Error Handling
- PHP & MongoDB - Limiting Records
- PHP & MongoDB - Sorting Records
- PHP & MongoDB Useful Resources
- PHP & MongoDB - Quick Guide
- PHP & MongoDB - Useful Resources
- PHP & MongoDB - Discussion
PHP & MongoDB - Show Databases
First step to do any operation is to create a Manager instance.
// Connect to MongoDB using Manager Instance $manager = new MongoDB\Driver\Manager("mongodb://localhost:27017");
Second step is to prepare and execute a command on a database to show the list of databases available.
// Create a Command Instance $databaseList = new MongoDB\Driver\Command(["listDatabases" => 1]); // Execute the command on the database $cursor = $manager->executeCommand("admin", $databaseList);
Example
Try the following example to list databases available by default in MongoDB server −
Copy and paste the following example as mongodb_example.php −
<?php try { // connect to mongodb $manager = new MongoDB\Driver\Manager("mongodb://localhost:27017"); // Create a Command Instance $databaseList = new MongoDB\Driver\Command(["listDatabases" => 1]); // Execute the command on the database $cursor = $manager->executeCommand("admin", $databaseList); $databases = current($cursor->toArray()); foreach ($databases->databases as $database) { echo $database->name . "<br/>"; } } catch (MongoDB\Driver\Exception\Exception $e) { echo "Exception:", $e->getMessage(), "\n"; } ?>
Output
Access the mongodb_example.php deployed on apache web server and verify the output.
admin config local
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