First commit

sites/all/modules/civicrm/Civi/CiUtil/Arrays.php

@@ -0,0 +1,24 @@
+<?php
+namespace Civi\CiUtil;
+
+/**
+ * Class Arrays
+ *
+ * @package Civi\CiUtil
+ */
+class Arrays {
+  /**
+   * @param $arr
+   * @param $col
+   *
+   * @return array
+   */
+  public static function collect($arr, $col) {
+    $r = array();
+    foreach ($arr as $k => $item) {
+      $r[$k] = $item[$col];
+    }
+    return $r;
+  }
+
+}