--- /dev/null
+--TEST--
+array index test
+--TEMPLATE--
+{% for key, value in days %}
+{{ key }}
+{% endfor %}
+--DATA--
+return array('days' => array(
+ 1 => array('money' => 9),
+ 2 => array('money' => 21),
+ 3 => array('money' => 38),
+ 4 => array('money' => 6),
+ 18 => array('money' => 6),
+ 19 => array('money' => 3),
+ 31 => array('money' => 11),
+));
+--EXPECT--
+1
+2
+3
+4
+18
+19
+31