From 5ffcb20589a491bfcf8dffa526c7bf8eb5d9bc33 Mon Sep 17 00:00:00 2001
From: Frederic Delaunay <frederic.delaunay@manymakers.net>
Date: Wed, 14 Mar 2018 20:11:05 +0100
Subject: [PATCH 1/2] FIX: #388 - supporting Microsoft x14 and xm extensions
 for dataValidations.

---
 src/PhpSpreadsheet/Reader/Xlsx.php | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/PhpSpreadsheet/Reader/Xlsx.php b/src/PhpSpreadsheet/Reader/Xlsx.php
index b54622cd37..41ced9111c 100644
--- a/src/PhpSpreadsheet/Reader/Xlsx.php
+++ b/src/PhpSpreadsheet/Reader/Xlsx.php
@@ -1239,6 +1239,21 @@ public function load($pFilename)
                             }
 
                             if ($xmlSheet && $xmlSheet->dataValidations && !$this->readDataOnly) {
+                                // handle Microsoft extension if present
+                                if (isset ($xmlSheet->extLst, $xmlSheet->extLst->ext, $xmlSheet->extLst->ext['uri'])
+                                && $xmlSheet->extLst->ext['uri'] == "{CCE6A557-97BC-4b89-ADB6-D9C93CAAB3DF}" )
+                                {
+                                  // retreive MS extension data to create a node that matches expectations.
+                                  foreach ($xmlSheet->extLst->ext->children('x14', TRUE)->dataValidations->dataValidation as $item)
+                                  {
+                                    $node = $xmlSheet->dataValidations->addChild('dataValidation');
+                                    foreach ($item->attributes() as $attr)
+                                      $node->addAttribute($attr->getName(), $attr);
+                                    $node->addAttribute('sqref', $item->children('xm',TRUE)->sqref);
+                                    $node->addChild('formula1', $item->formula1->children('xm',TRUE)->f);
+                                  }
+                                }
+
                                 foreach ($xmlSheet->dataValidations->dataValidation as $dataValidation) {
                                     // Uppercase coordinate
                                     $range = strtoupper($dataValidation['sqref']);

From 5b38d3d47f6bd2b6966188db954a8c99cefc6801 Mon Sep 17 00:00:00 2001
From: Frederic Delaunay <frederic.delaunay@manymakers.net>
Date: Fri, 16 Mar 2018 15:10:30 +0100
Subject: [PATCH 2/2] ADD: entry about added x14 and xm extensions in the
 dataValidation part of the Xlsx format.

---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9fb42e539c..d5f7a21beb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Added
 
+- Xlsx reader supports MS x14 and xm extensions for dataValidations - [#388](https://github.com/PHPOffice/PhpSpreadsheet/issues/388)
 - HTML writer creates a generator meta tag - [#312](https://github.com/PHPOffice/PhpSpreadsheet/issues/312)
 - Support invalid zoom value in XLSX format - [#350](https://github.com/PHPOffice/PhpSpreadsheet/pull/350)
 - Support for `_xlfn.` prefixed functions and `ISFORMULA`, `MODE.SNGL`, `STDEV.S`, `STDEV.P` - [#390](https://github.com/PHPOffice/PhpSpreadsheet/pull/390)