Add object function arrayUnique()

1 files changed, 26 insertions, 0 deletions

diff --git a/app/class/object.class.php b/app/class/object.class.php
index 461f1b1..c1ba85c 100644
--- a/app/class/object.class.php
+++ b/app/class/object.class.php
@@ -71,6 +71,32 @@ class object extends table
     }
 
     /*
+     * Remove duplicate elements from an array of Scrott objects.  This
+     * function compares object GUIDs to check for uniqueness.  Array
+     * keys are preserved.  NULL elements are removed.  Resulting array
+     * is returned.
+     */
+    public static function arrayUnique(array $arr) : array
+    {
+        $guids = array();
+        $ret = array();
+
+        foreach ($arr as $k => $v)
+        {
+            if ($v === NULL)
+                continue;
+
+            if (in_array($v->guid, $guids))
+                continue;
+
+            $guids[] = $v->guid;
+            $ret[$k] = $v;
+        }
+
+        return $ret;
+    }
+
+    /*
      * Get the owner of this object.  Either a user object or a group
      * object will be returned.  If this object does not have an owner,
      * NULL will be returned.