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  1. PHP Driver: Library
  2. PHPLIB-1615

Exception thrown when iterating over a ChangeStream cursor

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    • Type: Icon: Bug Bug
    • Resolution: Cannot Reproduce
    • Priority: Icon: Unknown Unknown
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    • Affects Version/s: 1.20.0
    • Component/s: None
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    • PHP Drivers
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      3. Which versions of the driver/connector does this apply to?

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      1. What would you like to communicate to the user about this feature? 2. Would you like the user to see examples of the syntax and/or executable code and its output? 3. Which versions of the driver/connector does this apply to?
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      When following the example for monitoring a change stream in the documentation at MongoDB\Collection::watch() - PHP Library Manual v1.20, the call to `rewind()` and `next()` in the for loop causes the following exception to be thrown:

       

      MongoDB\Driver\Cursor::getId() expects exactly 0 arguments, 1 given : {"exception":"[object] (ArgumentCountError(code: 0): MongoDB\\Driver\\Cursor::getId() expects exactly 0 arguments, 1 given at /<repo_path...>/vendor/mongodb/mongodb/src/ChangeStream.php:132)"}

       

       

      Code snippet:

       

      $uri = 'mongodb://rs1.example.com,rs2.example.com/?replicaSet=myReplicaSet';
$collection = (new MongoDB\Client($uri))->test->inventory;
$changeStream = $collection->watch();
for ($changeStream->rewind(); true; $changeStream->next()) {
    if ( ! $changeStream->valid()) {
        continue;
    }
    $event = $changeStream->current();
}

       

       

      The call stack for the call to `next()`

      MongoDB\ChangeStream->getCursorId ChangeStream.php 132:1
      MongoDB\ChangeStream->onIteration ChangeStream.php 264:1
      MongoDB\ChangeStream->next ChangeStream.php 173:1

            Assignee:
            jmikola@mongodb.com Jeremy Mikola
            Reporter:
            jerren_s@hotmail.com Jerren Saunders
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              Updated:
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