Merge pull request #6492 from eileenmcnaughton/CRM-17020

[civicrm-core.git] / CRM / Utils / Array.php

diff --git a/CRM/Utils/Array.php b/CRM/Utils/Array.php
index 9af358d6a895a872eb727bb0e11e908b0335dc20..d82ff2df4c3263a8f2e020f1964812e595a08f07 100644 (file)
--- a/CRM/Utils/Array.php
+++ b/CRM/Utils/Array.php
@@ -921,4 +921,47 @@ class CRM_Utils_Array {
     }
   }
 
+  /**
+   * Get a single value from an array-tre.
+   *
+   * @param array $arr
+   *   Ex: array('foo'=>array('bar'=>123)).
+   * @param array $pathParts
+   *   Ex: array('foo',bar').
+   * @return mixed|NULL
+   *   Ex 123.
+   */
+  public static function pathGet($arr, $pathParts) {
+    $r = $arr;
+    foreach ($pathParts as $part) {
+      if (!isset($r[$part])) {
+        return NULL;
+      }
+      $r = $r[$part];
+    }
+    return $r;
+  }
+
+  /**
+   * Set a single value in an array tree.
+   *
+   * @param array $arr
+   *   Ex: array('foo'=>array('bar'=>123)).
+   * @param array $pathParts
+   *   Ex: array('foo',bar').
+   * @param $value
+   *   Ex: 456.
+   */
+  public static function pathSet(&$arr, $pathParts, $value) {
+    $r = &$arr;
+    $last = array_pop($pathParts);
+    foreach ($pathParts as $part) {
+      if (!isset($r[$part])) {
+        $r[$part] = array();
+      }
+      $r = &$r[$part];
+    }
+    $r[$last] = $value;
+  }
+
 }