动态数据库选择 PHP Mongodb

Question

Not able to select the database and collection dynamically. Read all the solutions but not working for me. selectDB function not working. It's working only with the static data.

I want to select the database from the configuration file and also select the collections dynamically.

$username='abcd';
$password='efgh';
$m = new MongoDB\Client("mongodb://abcd@127.0.0.1:28015/ijkl", array("username" => $username, "password" => $password));

$db = $m->ijkl;

but I want to have it like

$username='abcd';
$password='efgh';
$m = new MongoDB\Client("mongodb://abcd@127.0.0.1:28015/ijkl", array("username" => $username, "password" => $password));

$l1="ijkl";
$db = $m->$l1;

Expecting to work with dynamic database selection.

Answer 1

Use mongodb client repo from packagist. You can install it via composer

$ composer require mongodb/mongodb

in your root directory, create file for example app.php

<?php

require 'vendor/autoload.php';

$databases = [
 'db1'=> [
    'db' => 'testdb1',
    'username' => 'user',
    'password' => 'pass',
    ...
 ], 
  'db2'=> [...],
  ...
];
$seletected = 'db1';

$database = $databases[$selected];

$client = new MongoDB\Client(
    "mongodb+srv://{$database['username']}:{$database['password']}@<cluster-address>/test?retryWrites=true&w=majority"
);


$db = $client->{$database['db']};

Answer 2

Finally it's working

$m = new MongoDB\Client("mongodb://".$mongo_username."@".$mongo_ip.":".$mongo_port."/".$mongo_db, array("username" => $mongo_username, "password" => $mongo_password));


 if(!empty($db = $m->$mongo_db))
 {
     $collection = "test";

   if(!empty($collection = $db->$collection))
   {

    $cursor =$collection->find(array("status"=>0), ['limit' => 10,'skip'=>10]);

     foreach ($cursor as $document) {

        echo "<b>ID is:</b>";
        echo $id=$document["_id"];
        echo "<br>";
        echo "<b>Link is:</b>";
        echo $link=$document["Link"];
        echo "<br>";
        echo "<b>Status is:</b>";
        echo $status=$document["status"];
        echo "<br>";
        echo "<b>Label is:</b>";
        echo $label=$document["Label"];
        echo "<br>";


    }
   }
   else
   {
       echo "Not able to select the collection!";
   }
 }
 else
 {
     echo "Not able to select the database!";
 }

Answer 3

replace $db = $m->$l1 to $db = $m->{$l1}

$username='abcd';
$password='efgh';
require 'vendor/aoutoload.php';
$m = new MongoDB\Client("mongodb://abcd@127.0.0.1:28015/ijkl", array("username"=> $username, "password" => $password));

$l1="ijkl";

$db = $m->{$l1};