Added another example to show that you can also pass in a query with distinct.

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@319248 c90b9560-bf6c-de11-be94-00142212c4b1

reference/mongo/mongodb/command.xml

@@ -139,6 +139,44 @@ foreach ($ages['values'] as $age) {
    <screen>
 4
 22
+87
+   </screen>
+  </example>
+  <example>
+   <title><function>MongoDB::command</function> "distinct" example</title>
+   <para>
+    Finding all of the distinct values for a key, where the value is larger
+    than or equal to 18.
+   </para>
+   <programlisting role="php">
+<![CDATA[
+<?php
+
+$people = $db->people;
+
+$people->insert(array("name" => "Joe", "age" => 4));
+$people->insert(array("name" => "Sally", "age" => 22));
+$people->insert(array("name" => "Dave", "age" => 22));
+$people->insert(array("name" => "Molly", "age" => 87));
+
+$ages = $db->command(
+    array(
+        "distinct" => "people",
+        "key" => "age", 
+        "query" => array("age" => array('$gte' => 18))
+    )
+);  
+
+foreach ($ages['values'] as $age) {
+    echo "$age\n";
+}
+
+?>
+]]>
+   </programlisting>
+   &example.outputs.similar;
+   <screen>
+22
 87
    </screen>
   </example>