diff --git a/framework/base/helper.class.php b/framework/base/helper.class.php
index f24311419d..169811319a 100644
--- a/framework/base/helper.class.php
+++ b/framework/base/helper.class.php
@@ -902,3 +902,39 @@ function htmlSpecialString($string, $flags = '', $encoding = 'UTF-8')
     if(!$flags) $flags = defined('ENT_SUBSTITUTE') ? ENT_QUOTES | ENT_SUBSTITUTE | ENT_HTML401 : ENT_QUOTES;
     return htmlspecialchars($string, $flags, $encoding);
 }
+
+if (!function_exists('array_column'))
+{
+    function array_column(array $input, $columnKey, $indexKey = null)
+    {
+        $output = array();
+
+        foreach ($input as $row) {
+            $key = $value = null;
+            $keySet = $valueSet = false;
+
+            if (null !== $indexKey && array_key_exists($indexKey, $row)) {
+                $keySet = true;
+                $key = (string) $row[$indexKey];
+            }
+
+            if (null === $columnKey) {
+                $valueSet = true;
+                $value = $row;
+            } elseif (\is_array($row) && \array_key_exists($columnKey, $row)) {
+                $valueSet = true;
+                $value = $row[$columnKey];
+            }
+
+            if ($valueSet) {
+                if ($keySet) {
+                    $output[$key] = $value;
+                } else {
+                    $output[] = $value;
+                }
+            }
+        }
+
+        return $output;
+    }
+}
\ No newline at end of file
diff --git a/module/bug/model.php b/module/bug/model.php
index dabf556e08..c99469976d 100644
--- a/module/bug/model.php
+++ b/module/bug/model.php
@@ -1901,7 +1901,7 @@ class bugModel extends model
         {
             $data->name  = isset($executions[$executionID]) ? $executions[$executionID] : $this->lang->report->undefined;
             $data->title = $data->name;
-            if(mb_strlen($data->name) > $maxLength) $data->name = mb_substr($data->name, 0, $maxLength) . '...';
+            if(mb_strlen($data->name, 'UTF-8') > $maxLength) $data->name = mb_substr($data->name, 0, $maxLength, 'UTF-8') . '...';
         }
         return $datas;
     }
diff --git a/module/convert/view/index.html.php b/module/convert/view/index.html.php
index 7acb751d44..eb2fb5860b 100644
--- a/module/convert/view/index.html.php
+++ b/module/convert/view/index.html.php
@@ -1,29 +1,29 @@
-<?php
-/**
- * The html template file of index method of convert module of ZenTaoPMS.
- *
+<?php
+/**
+ * The html template file of index method of convert module of ZenTaoPMS.
+ *
  * @copyright   Copyright 2009-2015 青岛易软天创网络科技有限公司(QingDao Nature Easy Soft Network Technology Co,LTD, www.cnezsoft.com)
  * @license     ZPL (http://zpl.pub/page/zplv12.html)
- * @author      Chunsheng Wang <chunsheng@cnezsoft.com>
- * @package     ZenTaoPMS
- * @version     $Id: index.html.php 4129 2013-01-18 01:58:14Z wwccss $
- */
-?>
-<?php include '../../common/view/header.html.php';?>
-<div class='container mw-700px'>
-  <div id='titlebar'>
-    <div class='heading'>
-      <span class='prefix'><?php echo html::icon('cloud-upload');?></span>
-      <strong><?php echo $lang->convert->common;?></strong>
-    </div>
-  </div>
-  <div class='alert mg-0 bd-0'>
-    <div class='content'>
-      <?php echo nl2br($lang->convert->desc);?>
-      <div class='text-center pdt-20'>
-        <?php echo html::a($this->createLink('convert', 'selectsource'), $lang->convert->start, '', 'class="btn btn-primary"');?>
-      </div>
-    </div>
-  </div>
-</div>
-<?php include '../../common/view/footer.html.php';?>
+ * @author      Chunsheng Wang <chunsheng@cnezsoft.com>
+ * @package     ZenTaoPMS
+ * @version     $Id: index.html.php 4129 2013-01-18 01:58:14Z wwccss $
+ */
+?>
+<?php include '../../common/view/header.html.php';?>
+<div class='container mw-700px'>
+  <div id='titlebar'>
+    <div class='heading'>
+      <span class='prefix'><?php echo html::icon('cloud-upload');?></span>
+      <strong><?php echo $lang->convert->common;?></strong>
+    </div>
+  </div>
+  <div class='alert mg-0 bd-0'>
+    <div class='content'>
+      <?php echo nl2br($lang->convert->desc);?>
+      <div class='text-center pdt-20'>
+        <?php echo html::a($this->createLink('convert', 'selectsource'), $lang->convert->start, '', 'class="btn btn-primary"');?>
+      </div>
+    </div>
+  </div>
+</div>
+<?php include '../../common/view/footer.html.php';?>
diff --git a/module/execution/view/preview.html.php b/module/execution/view/preview.html.php
index dd11f4304f..1f99b97981 100644
--- a/module/execution/view/preview.html.php
+++ b/module/execution/view/preview.html.php
@@ -87,7 +87,7 @@ $dataType = '';
           </div>
           <?php if($col == 'story' or $dataType == 'bug'):?>
           <?php $desc = $col == 'story' ? $storySpecs[$content->id]->spec : $content->steps;?>
-          <div class='board-content'><?php echo mb_substr(strip_tags($desc, "<p><br/>"), 0, 90, 'utf8')?></div>
+          <div class='board-content'><?php echo mb_substr(strip_tags($desc, "<p><br>"), 0, 90, 'utf8')?></div>
           <?php endif;?>
         </div>
         <div class="board-footer <?php echo $col == 'story' ? 'story' : 'task'?>">
diff --git a/module/extension/view/deactivate.html.php b/module/extension/view/deactivate.html.php
index 120c68221b..2932bc045e 100644
--- a/module/extension/view/deactivate.html.php
+++ b/module/extension/view/deactivate.html.php
@@ -23,7 +23,7 @@
       <?php if($removeCommands):?>
       <div class='container mw-500px'>
         <p><strong><?php echo $lang->extension->unremovedFiles;?></strong></p>
-        <code><?php echo join($removeCommands, '<br />');?></code>
+        <code><?php echo join('<br />', $removeCommands);?></code>
       </div>
       <?php endif;?>
       <hr>
diff --git a/module/extension/view/erase.html.php b/module/extension/view/erase.html.php
index c5852376b8..0512b98a01 100644
--- a/module/extension/view/erase.html.php
+++ b/module/extension/view/erase.html.php
@@ -26,7 +26,7 @@
         <h3><?php echo $title;?></h3>
         <?php if($removeCommands):?>
         <p><strong><?php echo $lang->extension->unremovedFiles;?></strong></p>
-        <p><?php echo join($removeCommands, '<br />');?></p>
+        <p><?php echo join('<br />', $removeCommands);?></p>
         <?php endif;?>
         <p class='text-center'><?php echo html::commonButton($lang->extension->viewAvailable, 'onclick=parent.location.href="' . inlink('browse', 'type=available') . '"');?></p>
       </div>
diff --git a/module/extension/view/uninstall.html.php b/module/extension/view/uninstall.html.php
index f1e74c33bb..200a6c990d 100644
--- a/module/extension/view/uninstall.html.php
+++ b/module/extension/view/uninstall.html.php
@@ -51,7 +51,7 @@
         if($removeCommands)
         {
             echo "<p class='strong'>{$lang->extension->unremovedFiles}</p>";
-            echo join($removeCommands, '<br />');
+            echo join('<br />', $removeCommands);
         }
         echo "<p class='text-center'>" . html::commonButton($lang->extension->viewAvailable, 'onclick=parent.location.href="' . inlink('browse', 'type=available') . '"') . '</p>';
         ?>
diff --git a/module/group/model.php b/module/group/model.php
index 379decbf3b..967dd0e306 100644
--- a/module/group/model.php
+++ b/module/group/model.php
@@ -501,7 +501,7 @@ class groupModel extends model
             $data = new stdclass();
             $data->group   = $groupID;
             $data->account = $account;
-            $data->project = implode($programs[$account], ',');
+            $data->project = implode(',', $programs[$account]);
 
             $this->dao->replace(TABLE_USERGROUP)->data($data)->exec();
             foreach($programs[$account] as $programID)
diff --git a/module/testtask/model.php b/module/testtask/model.php
index b72a34b67c..83cd58c946 100644
--- a/module/testtask/model.php
+++ b/module/testtask/model.php
@@ -1953,9 +1953,9 @@ class testtaskModel extends model
                     {
                         $result->stepResults[0]['real'] = (string)$matchNode->$failure;
                     }
-                    elseif(isset($matchNode->$failure[0]))
+                    elseif(isset($matchNode->{$failure}[0]))
                     {
-                        $result->stepResults[0]['real'] = (string)$matchNode->$failure[0];
+                        $result->stepResults[0]['real'] = (string)$matchNode->{$failure}[0];
                     }
                     else
                     {
diff --git a/tools/compatibility/check.sh b/tools/compatibility/check.sh
index 44e2acc02f..3150d746dc 100644
--- a/tools/compatibility/check.sh
+++ b/tools/compatibility/check.sh
@@ -1,3 +1,9 @@
+#!/usr/bin/env bash
+
+set -eu
+
+cd "$(dirname $0)"
+
 php phpcs.phar  --config-set installed_paths $PWD/PHPCompatibility > /dev/null;
 
 php ./phpcs.phar  --standard=ruleset.xml --ignore=*.css ../../module;