fixed problems with empy strings

Author: ggoffy

class/Files/CreateArchitecture.php

@@ -160,6 +160,10 @@ public function setBaseFoldersFiles($module): void
             \copy($copyFile, $copyNewFile);
         } else {
             // Copy file
+            if (!\file_exists($logoPng)) {
+                $logoPng = 'tdmxoops_logo.png';
+                $logoGifFrom = TDMC_UPLOAD_IMGMOD_PATH . '/' . $logoPng;
+            }
             $copyFile    = TDMC_IMAGES_LOGOS_URL . '/' . $logoPng;
             $copyNewFile = $logoGifFrom;
             \copy($copyFile, $copyNewFile);

class/Files/CreateFile.php

@@ -329,7 +329,11 @@ public function getLanguage($moduleDirname, $prefix = '', $suffix = '', $addFq =
      */
     public function getLeftString($string)
     {
-        return \mb_substr($string, 0, (int)\mb_strpos($string, '_'));
+        $ret = '';
+        if ('' != $string) {
+            $ret .= \mb_substr($string, 0, (int)\mb_strpos($string, '_'));
+        }
+        return $ret;
     }
 
     /**
@@ -340,7 +344,7 @@ public function getLeftString($string)
      */
     public function getRightString($string = null)
     {
-        if ('' != \trim($string)) {
+        if ('' != $string) {
             if (\mb_strpos($string, '_')) {
                 $str = \mb_strpos($string, '_');
                 if (false !== $str) {
@@ -384,7 +388,11 @@ public function getCamelCase($string, $ucfirst = false, $lcfirst = false)
      */
     public function getUcfirst($string)
     {
-        return \ucfirst($string);
+        $ret = '';
+        if ('' != $string) {
+            $ret .= \ucfirst($string);
+        }
+        return $ret;
     }
 
     /**
@@ -395,7 +403,11 @@ public function getUcfirst($string)
      */
     public function getLcfirst($string)
     {
-        return \lcfirst($string);
+        $ret = '';
+        if ('' != $string) {
+            $ret .= \lcfirst($string);
+        }
+        return $ret;
     }
 
     /**
@@ -406,7 +418,11 @@ public function getLcfirst($string)
      */
     public function getStrToUpper($string)
     {
-        return \mb_strtoupper($string);
+        $ret = '';
+        if ('' != $string) {
+            $ret .= \mb_strtoupper($string);
+        }
+        return $ret;
     }
 
     /**
@@ -417,7 +433,11 @@ public function getStrToUpper($string)
      */
     public function getStrToLower($string)
     {
-        return \mb_strtolower($string);
+        $ret = '';
+        if ('' != $string) {
+            $ret .= \mb_strtolower($string);
+        }
+        return $ret;
     }
 
     /**