From: vyshane <vyshane>
Date: Thu, 8 Feb 2007 08:06:08 +0000 (+0000)
Subject: Merged from 1.7.
X-Git-Url: http://git.mjollnir.org/gw?a=commitdiff_plain;h=2327b9df74b3020589825e1a53ebb030e0f1ebcd;p=moodle.git

Merged from 1.7.
---

diff --git a/lib/datalib.php b/lib/datalib.php
index bd39d65d9e..28c6c030c6 100644
--- a/lib/datalib.php
+++ b/lib/datalib.php
@@ -888,6 +888,26 @@ function get_categories($parent='none', $sort='sortorder ASC') {
 }
 
 
+/**
+ * Returns an array of category ids of all the subcategories for a given
+ * category.
+ * @param $catid - The id of the category whose subcategories we want to find.
+ * @return array of category ids.
+ */
+function get_all_subcategories($catid) {
+
+    $subcats = array();
+
+    if ($categories = get_records('course_categories', 'parent', $catid)) {
+        foreach ($categories as $cat) {
+            array_push($subcats, $cat->id);
+            $subcats = array_merge($subcats, get_all_subcategories($cat->id));
+        }
+    }
+    return $subcats;
+}
+
+
 /**
 * This recursive function makes sure that the courseorder is consecutive
 *