Note that UpdateResult::getModifiedCount() is undefined for legacy ops

5d1686fe · Jeremy Mikola · 2a7cbb6d · 5d1686fe
Commit 5d1686fe authored Apr 30, 2015 by Jeremy Mikola
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UpdateResult.php src/UpdateResult.php +2 -1

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--- a/src/UpdateResult.php
+++ b/src/UpdateResult.php
@@ -38,7 +38,8 @@ class UpdateResult
    /**
     * Return the number of documents that were modified.
     *
-     * This value is undefined if the write was not acknowledged.
+     * This value is undefined if the write was not acknowledged or if the write
+     * executed as a legacy operation instead of write command.
     *
     * @see UpdateResult::isAcknowledged()
     * @return integer