MongoCommandCursor::rewind

(PECL mongo >=1.5.0)

MongoCommandCursor::rewind — Executes the command and resets the cursor to the start of the result set

Beschreibung

public MongoCommandCursor::rewind ( ) : array

If the cursor has already started iteration, the command will be re-executed.

Parameter-Liste

Diese Funktion besitzt keine Parameter.

Rückgabewerte

The raw server result document.

Fehler/Exceptions

Throws MongoConnectionException if it cannot reach the database and MongoCursorTimeoutException if the timeout is exceeded.

Throws MongoCursorException if the cursor was created with MongoCommandCursor::createFromDocument() and has already started iteration. Such cursors cannot be iterated multiple times, as they lack the original command necessary for re-execution.

Beispiele

Beispiel #1 MongoCommandCursor::rewind()

<?php
$rawResult = $commandCursor->rewind();

// Command cursor is now reset to the start of the result set

var_dump($rawResult);
?>

Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:

array(2) {
  ["cursor"]=>
  array(3) {
    ["id"]=>
    object(MongoInt64)#5 (1) {
      ["value"]=>
      string(12) "310050110216"
    }
    ["ns"]=>
    string(9) "demo.test"
    ["firstBatch"]=>
    array(1) {
      [0]=>
      array(2) {
        ["_id"]=>
        object(MongoId)#6 (1) {
          ["$id"]=>
          string(24) "52f5691544670a8077b0dc51"
        }
        ["value"]=>
        string(2) "42"
      }
    }
  }
  ["ok"]=>
  float(1)
}

Siehe auch