diff --git a/branches/lz-prognose/conlite/includes/functions.php73.php b/branches/lz-prognose/conlite/includes/functions.php73.php
new file mode 100644
index 0000000..672d016
--- /dev/null
+++ b/branches/lz-prognose/conlite/includes/functions.php73.php
@@ -0,0 +1,6 @@
+<?php
+if (!function_exists('is_countable')) {
+    function is_countable($var) {
+        return (is_array($var) || $var instanceof Countable);
+    }
+}
\ No newline at end of file
diff --git a/branches/lz-prognose/conlite/includes/include.frontend.user_edit.php b/branches/lz-prognose/conlite/includes/include.frontend.user_edit.php
index 2da7723..516d4a6 100644
--- a/branches/lz-prognose/conlite/includes/include.frontend.user_edit.php
+++ b/branches/lz-prognose/conlite/includes/include.frontend.user_edit.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Project: 
  * Contenido Content Management System
@@ -17,18 +18,17 @@
  *
  *   $Id: include.frontend.user_edit.php 292 2014-01-20 09:49:37Z oldperl $:
  */
-
-if(!defined('CON_FRAMEWORK')) {
-	die('Illegal call');
+if (!defined('CON_FRAMEWORK')) {
+    die('Illegal call');
 }
 
 $oPage = new cPage();
 $oPage->setHtml5();
-          
+
 $oFeUsers = new FrontendUserCollection();
 if (is_array($cfg['plugins']['frontendusers'])) {
-    foreach ($cfg['plugins']['frontendusers'] as $plugin)	{
-        plugin_include("frontendusers", $plugin."/".$plugin.".php");
+    foreach ($cfg['plugins']['frontendusers'] as $plugin) {
+        plugin_include("frontendusers", $plugin . "/" . $plugin . ".php");
     }
 }
 
@@ -42,13 +42,13 @@ $oFEGroupMemberCollection->query();
 # The array $aFEGroup can be used in frontenduser plugins to display selfdefined user properties group dependent.
 $aFEGroup = array();
 
-while($oFEGroup = $oFEGroupMemberCollection->next()) {
+while ($oFEGroup = $oFEGroupMemberCollection->next()) {
     $aFEGroup[] = $oFEGroup->get("idfrontendgroup");
 }
 
 if ($action == "frontend_create" && $perm->have_perm_area_action("frontend", "frontend_create")) {
-		$oFeUser = $oFeUsers->create(" ".i18n("-- new user --"));
-		$idfrontenduser = $oFeUser->get("idfrontenduser");
+    $oFeUser = $oFeUsers->create(" " . i18n("-- new user --"));
+    $idfrontenduser = $oFeUser->get("idfrontenduser");
 }
 
 if ($idfrontenduser && $action != '') {
@@ -57,7 +57,7 @@ if ($idfrontenduser && $action != '') {
                          if (left_bottom) {
                              var href = left_bottom.location.href;
                              href = href.replace(/&frontenduser.*/, '');
-                             left_bottom.location.href = href+'&frontenduser='+".$idfrontenduser.";
+                             left_bottom.location.href = href+'&frontenduser='+" . $idfrontenduser . ";
                              top.content.left.left_top.refresh();
                          }
                      </script>";
@@ -67,8 +67,8 @@ if ($idfrontenduser && $action != '') {
 
 $sFormCheck = '
     <script type="text/javascript">
-        var defaultName = "'.  i18n("-- new user --").'";
-        var PwEmpty = '.(($oFeUser->get("password") == "d41d8cd98f00b204e9800998ecf8427e")?"true":"false").';
+        var defaultName = "' . i18n("-- new user --") . '";
+        var PwEmpty = ' . (($oFeUser->get("password") == "d41d8cd98f00b204e9800998ecf8427e") ? "true" : "false") . ';
         function checkUserForm() {
             if(document.getElementById("m1").value.match(/defaultName/i)) {
                 alert("Default username, please use a new one!");
@@ -92,7 +92,7 @@ if ($action == "frontend_delete" && $perm->have_perm_area_action("frontend", "fr
     while ($chainEntry = $iterator->next()) {
         $chainEntry->execute($idfrontenduser);
     }
-    
+
     $idfrontenduser = 0;
     $oFeUser = new FrontendUser();
     $oPage->addScript('reload', $sReloadScript);
@@ -105,25 +105,25 @@ if ($oFeUser->virgin == false && $oFeUser->get("idclient") == $client) {
         $messages = array();
         $bStore = true;
         $initname = i18n("-- new user --");
-        $bNewUser = (strstr($username, $initname) === false)?false:true;
-        if(empty($username) || $bNewUser) {
+        $bNewUser = (strstr($username, $initname) === false) ? false : true;
+        if (empty($username) || $bNewUser) {
             $messages[] = i18n("Username empty or not set! Please choose one.");
             $bStore = false;
         }
         // check for empty password
-        if($bStore && empty($newpd) && $oFeUser->get("password") == "d41d8cd98f00b204e9800998ecf8427e") {
+        if ($bStore && empty($newpd) && $oFeUser->get("password") == "d41d8cd98f00b204e9800998ecf8427e") {
             $messages[] = i18n("Password not set right now!");
             $bStore = false;
         }
         if ($bStore && $oFeUser->get("username") != stripslashes($username)) {
-            $oFeUsers->select("username = '".urlencode($username)."' and idclient='$client'");
+            $oFeUsers->select("username = '" . urlencode($username) . "' and idclient='$client'");
             if ($oFeUsers->next()) {
                 $messages[] = i18n("Could not set new username: Username already exists");
             } else {
                 $oFeUser->set("username", stripslashes($username));
             }
         }
-        
+
         if ($newpd != $newpd2) {
             $messages[] = i18n("Could not set new password: Passwords don't match");
         } else {
@@ -131,122 +131,121 @@ if ($oFeUser->virgin == false && $oFeUser->get("idclient") == $client) {
                 $oFeUser->set("password", $newpd);
             }
         }
-        
+
         $oFeUser->set("active", $active);
 
         /* Check out if there are any plugins */
         if (is_array($cfg['plugins']['frontendusers'])) {
             foreach ($cfg['plugins']['frontendusers'] as $plugin) {
-                if (function_exists("frontendusers_".$plugin."_wantedVariables") &&
-                        function_exists("frontendusers_".$plugin."_store")) {
+                if (function_exists("frontendusers_" . $plugin . "_wantedVariables") && function_exists("frontendusers_" . $plugin . "_store")) {
                     # check if user belongs to a specific group 
                     # if true store values defined in frontenduser plugin
-                    if (function_exists("frontendusers_".$plugin."_checkUserGroup")) {
-                        $bCheckUserGroup = call_user_func("frontendusers_".$plugin."_checkUserGroup");
+                    if (function_exists("frontendusers_" . $plugin . "_checkUserGroup")) {
+                        $bCheckUserGroup = call_user_func("frontendusers_" . $plugin . "_checkUserGroup");
                     } else {
                         $bCheckUserGroup = true;
                     }
                     if ($bCheckUserGroup) {
-                        $wantVariables = call_user_func("frontendusers_".$plugin."_wantedVariables");
+                        $wantVariables = call_user_func("frontendusers_" . $plugin . "_wantedVariables");
                         if (is_array($wantVariables)) {
                             $varArray = array();
                             foreach ($wantVariables as $value) {
                                 $varArray[$value] = stripslashes($GLOBALS[$value]);
                             }
                         }
-                        $store = call_user_func("frontendusers_".$plugin."_store", $varArray);
+                        $store = call_user_func("frontendusers_" . $plugin . "_store", $varArray);
                     }
                 }
             }
         }
-        if($bStore) $oFeUser->store();
+        if ($bStore)
+            $oFeUser->store();
     }
-    
-    if (count($messages) > 0)	{
+
+    if (count($messages) > 0) {
         $notis = $notification->returnNotification("warning", implode("<br>", $messages)) . "<br>";
     }
-	
-	
-	$form = new UI_Table_Form("properties");
- $form->setSubmitJS("return checkUserForm();");
-	$form->setVar("frame", $frame);
+
+
+    $form = new UI_Table_Form("properties");
+    $form->setSubmitJS("return checkUserForm();");
+    $form->setVar("frame", $frame);
     $form->setVar("area", $area);
     $form->setVar("action", "frontend_save_user");
     $form->setVar("idfrontenduser", $idfrontenduser);
 
-	$form->addHeader(i18n("Edit user"));
-	
-	$username = new cHTMLTextbox("username", ((isset($_POST['username']) && $bStore === false)?$_POST['username']:$oFeUser->get("username")),40);
-	$newpw    = new cHTMLPasswordBox("newpd","",40);
-	$newpw2   = new cHTMLPasswordBox("newpd2","",40);
-	$active   = new cHTMLCheckbox("active","1");
-	$active->setChecked($oFeUser->get("active"));
-	
-	$form->add(i18n("User name"), $username->render());
-	$form->add(i18n("New password"), $newpw->render());
-	$form->add(i18n("New password (again)"), $newpw2->render());
-	$form->add(i18n("Active"), $active->toHTML(false));
-	
-	$pluginOrder = trim_array(explode(",",getSystemProperty("plugin", "frontendusers-pluginorder")));
-	
-	/* Check out if there are any plugins */
-	if (is_array($pluginOrder)) {
-     foreach ($pluginOrder as $plugin) {
-         if (function_exists("frontendusers_".$plugin."_getTitle") &&
-                 function_exists("frontendusers_".$plugin."_display")) {
-             # check if user belongs to a specific group 
-             # if true display frontenduser plugin
-             if (function_exists("frontendusers_".$plugin."_checkUserGroup")) {
-                 $bCheckUserGroup = call_user_func("frontendusers_".$plugin."_checkUserGroup");
-             } else {
-                 $bCheckUserGroup = true;
-             }
-             
-             if ($bCheckUserGroup) {
-                 $plugTitle = call_user_func("frontendusers_".$plugin."_getTitle");
-                 $display = call_user_func("frontendusers_".$plugin."_display", $oFeUser);
+    $form->addHeader(i18n("Edit user"));
 
-                 if (is_array($plugTitle) && is_array($display)) {
-                     foreach ($plugTitle as $key => $value) {
-                         $form->add($value, $display[$key]);
-                     }
-                 } else {
-                     if (is_array($plugTitle) || is_array($display)) {
-                         $form->add(i18n("WARNING"), sprintf(i18n("The plugin %s delivered an array for the displayed titles, but did not return an array for the contents."), $plugin));
-                     } else {
-                         $form->add($plugTitle, $display);
-                     }
-                 }
-             }
-         }
-     }
-     
-     $arrGroups = $oFeUser->getGroupsForUser();
-     
-     if(count($arrGroups) > 0) {
-        $aMemberGroups = array();
-         
-        foreach($arrGroups as $iGroup) {
-            $oMemberGroup = new FrontendGroup($iGroup);
-            $aMemberGroups[] = $oMemberGroup->get("groupname");
+    $username = new cHTMLTextbox("username", ((isset($_POST['username']) && $bStore === false) ? $_POST['username'] : $oFeUser->get("username")), 40);
+    $newpw = new cHTMLPasswordBox("newpd", "", 40);
+    $newpw2 = new cHTMLPasswordBox("newpd2", "", 40);
+    $active = new cHTMLCheckbox("active", "1");
+    $active->setChecked($oFeUser->get("active"));
+
+    $form->add(i18n("User name"), $username->render());
+    $form->add(i18n("New password"), $newpw->render());
+    $form->add(i18n("New password (again)"), $newpw2->render());
+    $form->add(i18n("Active"), $active->toHTML(false));
+
+    $pluginOrder = trim_array(explode(",", getSystemProperty("plugin", "frontendusers-pluginorder")));
+
+    /* Check out if there are any plugins */
+    if (is_array($pluginOrder)) {
+        foreach ($pluginOrder as $plugin) {
+            if (function_exists("frontendusers_" . $plugin . "_getTitle") && function_exists("frontendusers_" . $plugin . "_display")) {
+                # check if user belongs to a specific group 
+                # if true display frontenduser plugin
+                if (function_exists("frontendusers_" . $plugin . "_checkUserGroup")) {
+                    $bCheckUserGroup = call_user_func("frontendusers_" . $plugin . "_checkUserGroup");
+                } else {
+                    $bCheckUserGroup = true;
+                }
+
+                if ($bCheckUserGroup) {
+                    $plugTitle = call_user_func("frontendusers_" . $plugin . "_getTitle");
+                    $display = call_user_func("frontendusers_" . $plugin . "_display", $oFeUser);
+
+                    if (is_array($plugTitle) && is_array($display)) {
+                        foreach ($plugTitle as $key => $value) {
+                            $form->add($value, $display[$key]);
+                        }
+                    } else {
+                        if (is_array($plugTitle) || is_array($display)) {
+                            $form->add(i18n("WARNING"), sprintf(i18n("The plugin %s delivered an array for the displayed titles, but did not return an array for the contents."), $plugin));
+                        } else {
+                            $form->add($plugTitle, $display);
+                        }
+                    }
+                }
+            }
         }
-        asort($aMemberGroups);
 
-        $sTemp = implode('<br/>', $aMemberGroups);
-    } else {
-        $sTemp = i18n("none");
+        $arrGroups = $oFeUser->getGroupsForUser();
+
+        if (count($arrGroups) > 0) {
+            $aMemberGroups = array();
+
+            foreach ($arrGroups as $iGroup) {
+                $oMemberGroup = new FrontendGroup($iGroup);
+                $aMemberGroups[] = $oMemberGroup->get("groupname");
+            }
+            asort($aMemberGroups);
+
+            $sTemp = implode('<br/>', $aMemberGroups);
+        } else {
+            $sTemp = i18n("none");
+        }
+
+        $form->add(i18n("Group membership"), $sTemp);
+        $form->add(i18n("Author"), $classuser->getUserName($oFeUser->get("author")) . " (" . $oFeUser->get("created") . ")");
+        $form->add(i18n("Last modified by"), $classuser->getUserName($oFeUser->get("modifiedby")) . " (" . $oFeUser->get("modified") . ")");
     }
-    
-    $form->add(i18n("Group membership"), $sTemp ); 
-    $form->add(i18n("Author"), $classuser->getUserName($oFeUser->get("author")) . " (". $oFeUser->get("created").")" ); 
-    $form->add(i18n("Last modified by"), $classuser->getUserName($oFeUser->get("modifiedby")). " (". $oFeUser->get("modified").")" );
-}
 //$sDialog = '<div id="dialog" title="Dialog Title">I\'m in a dialog</div>';
-$sDialog = "";
-$oPage->setContent(	$notis .	$form->render(true). $sDialog);
-$oPage->addScript('reload', $sReloadScript);
+    $sDialog = "";
+    $oPage->setContent($notis . $form->render(true) . $sDialog);
+    $oPage->addScript('reload', $sReloadScript);
 } else {
-	$oPage->setContent("");	
+    $oPage->setContent("");
 }
 $oPage->render();
 ?>
diff --git a/branches/lz-prognose/conlite/includes/pseudo-cron.inc.php b/branches/lz-prognose/conlite/includes/pseudo-cron.inc.php
index eed5dff..c0a0b3b 100644
--- a/branches/lz-prognose/conlite/includes/pseudo-cron.inc.php
+++ b/branches/lz-prognose/conlite/includes/pseudo-cron.inc.php
@@ -405,6 +405,9 @@ function parseCronFile($PC_cronTabFile, $PC_debug) {
     $file = @file($PC_cronTabFile);
     $job = Array();
     $jobs = Array();
+	if(!is_countable($file)) {
+		return $jobs;
+	}
     for ($i = 0; $i < count($file); $i++) {
         if ($file[$i][0] != '#') {
 //         old regex, without dow abbreviations:
diff --git a/branches/lz-prognose/conlite/includes/startup.php b/branches/lz-prognose/conlite/includes/startup.php
index 50ee2ec..6c71e4c 100644
--- a/branches/lz-prognose/conlite/includes/startup.php
+++ b/branches/lz-prognose/conlite/includes/startup.php
@@ -78,6 +78,9 @@ if (!defined('CL_VERSION')) {
 // fixed functions for PHP 5.4 and later
 include_once(str_replace('\\', '/', realpath(dirname(__FILE__) . '/..')) . '/includes/functions.php54.php');
 
+// simulate PHP 7.3 functions
+include_once(str_replace('\\', '/', realpath(dirname(__FILE__) . '/..')) . '/includes/functions.php73.php');
+
 // 1. security check: Include security class and invoke basic request checks
 include_once(str_replace('\\', '/', realpath(dirname(__FILE__) . '/..')) . '/classes/class.security.php');
 try {