use empty() where array values might not be set

3 files changed, 4 insertions, 4 deletions

diff --git a/lib/exe/mediamanager.php b/lib/exe/mediamanager.php
index d94a24c74..7044232ce 100644
--- a/lib/exe/mediamanager.php
+++ b/lib/exe/mediamanager.php
@@ -57,7 +57,7 @@
     }
 
     // give info on PHP caught upload errors
-    if($_FILES['upload']['error']){
+    if(!empty($_FILES['upload']['error'])){
         switch($_FILES['upload']['error']){
             case 1:
             case 2:
@@ -71,7 +71,7 @@
     }
 
     // handle upload
-    if($_FILES['upload']['tmp_name']){
+    if(!empty($_FILES['upload']['tmp_name'])){
         $JUMPTO = media_upload($NS,$AUTH);
         if($JUMPTO) $NS = getNS($JUMPTO);
     }
diff --git a/lib/plugins/acl/admin.php b/lib/plugins/acl/admin.php
index 6c7c28ff6..00bf9969f 100644
--- a/lib/plugins/acl/admin.php
+++ b/lib/plugins/acl/admin.php
@@ -488,7 +488,7 @@ class admin_plugin_acl extends DokuWiki_Admin_Plugin {
     function _html_list_acl($item){
         $ret = '';
         // what to display
-        if($item['label']){
+        if(!empty($item['label'])){
             $base = $item['label'];
         }else{
             $base = ':'.$item['id'];
diff --git a/lib/plugins/usermanager/admin.php b/lib/plugins/usermanager/admin.php
index eadfb76ad..b67d91b36 100644
--- a/lib/plugins/usermanager/admin.php
+++ b/lib/plugins/usermanager/admin.php
@@ -53,7 +53,7 @@ class admin_plugin_usermanager extends DokuWiki_Admin_Plugin {
         }
 
         // attempt to retrieve any import failures from the session
-        if ($_SESSION['import_failures']){
+        if (!empty($_SESSION['import_failures'])){
             $this->_import_failures = $_SESSION['import_failures'];
         }
     }