added elements() to the Array Helper to return elements from an array with specified keys only. Differs from array_intersect_assoc() in that a default value can be provided for keys that do not exist in the supplied array
diff --git a/system/helpers/array_helper.php b/system/helpers/array_helper.php
index bd30b7c..447ee1a 100644
--- a/system/helpers/array_helper.php
+++ b/system/helpers/array_helper.php
@@ -73,6 +73,46 @@
}
}
+// --------------------------------------------------------------------
+
+/**
+ * Elements
+ *
+ * Returns only the array items specified. Will return a default value if
+ * it is not set.
+ *
+ * @access public
+ * @param array
+ * @param array
+ * @param mixed
+ * @return mixed depends on what the array contains
+ */
+if ( ! function_exists('elements'))
+{
+ function elements($items, $array, $default = FALSE)
+ {
+ $return = array();
+
+ if ( ! is_array($items))
+ {
+ $items = array($items);
+ }
+
+ foreach ($items as $item)
+ {
+ if (isset($array[$item]))
+ {
+ $return[$item] = $array[$item];
+ }
+ else
+ {
+ $return[$item] = $default;
+ }
+ }
+
+ return $return;
+ }
+}
/* End of file array_helper.php */
/* Location: ./system/helpers/array_helper.php */
\ No newline at end of file