conexão usando o mongodb.php

<?php	
try{	
	$mongo = new MongoDB\Driver\Manager();
	$query = new mongoDB\Driver\Query([], ['sort' => ['nome' => 1], 'limit' => 5]);
	 
	$rows = $mongo->executeQuery("teste.clientes", $query);

	foreach($rows as $row){
		echo "$row->nome:$row->profissao\n";
	}
}catch (MongoDB\Drive\Exception\Exception $e){
	echo "fudeu na linha ".$e->getLine()." foi ".$e->getMessage();
}