diff --git a/_class/class_milestone.php b/_class/class_milestone.php
index d3ad4ab..391609c 100644
--- a/_class/class_milestone.php
+++ b/_class/class_milestone.php
@@ -272,6 +272,10 @@ class milestone
         return $this;
     }
 
+    private static function is_valid($str) {
+        return !preg_match('/([A-ZÁÉÚŐÓÜŰÖÍa-z0-9áéúőóüűöí\_\-\ \,\.\:\?\;])/', $str);
+    }
+
     public static function upload_file($file)
     {
         global $sql;
@@ -293,9 +297,25 @@ class milestone
 
 
         $content = file($_FILES['fileToUpload']['tmp_name']); //makes array
+        $newcontent = [];
+        foreach ($content as $lineNo => $line) {
+            //$line = utf8_decode($line);
+            //$line = iconv("UTF-8", "UTF-8//IGNORE", $line);
+            $valid = self::is_valid($line);
+            if (!$valid) {
+                $correctedStr = preg_replace('/[^A-ZÁÉÚŐÓÜŰÖÍa-z0-9áéúőóüűöí\_\-\ \,\.\:\?\;]/', '', $line);
+                $newcontent[$lineNo] = $correctedStr;
+            }
+            else {
+                $newcontent[$lineNo] = $line;
+            }
 
-
-        //var_dump($content);
+            //$line = mb_convert_encoding($line, 'UTF-8', 'UTF-8');
+        }
+        //x
+        //var_dump($newcontent);
+        //die();
+        //die();
 
         /*
             Szerkezet:
@@ -341,11 +361,13 @@ class milestone
         */
 
         $milestoneId = null;
-//var_dump($content);
-        for ($lineNo = 0; $lineNo < count($content); ++$lineNo) {
+//var_dump($newcontent);
+        for ($lineNo = 0; $lineNo < count($newcontent); ++$lineNo) {
             //var_dump($lineNo);
-            $line = $content[$lineNo];
+            $line = $newcontent[$lineNo];
+
             //var_dump($line);
+            //var_dump(0 === $lineNo, substr($line, 0, 1));
 
             //1. sor lekezelése: ha nem szezon, akkor hiba!
             if (0 === $lineNo && 's' != substr($line, 0, 1)) {
@@ -373,14 +395,14 @@ class milestone
                     $mss_text = "";
 
                     $j = $lineNo;
-                    while(isset($content[$j]) && !empty(trim($content[$j]))) {
+                    while(isset($newcontent[$j]) && !empty(trim($newcontent[$j]))) {
                         //ha még csak a szezon első sorát olvassuk, akkor csak az "s" után rész kell
                         if ($j == $lineNo) {
-                            //$content[$j] = substr($content[$j], 2);
+                            //$newcontent[$j] = substr($newcontent[$j], 2);
                             $j++;
                             continue;
                         }
-                        $mss_text .= trim($content[$j]) . '\n';
+                        $mss_text .= trim($newcontent[$j]) . '\n';
                         //++$lineNo;
                         $j++;
                     }
@@ -396,16 +418,16 @@ class milestone
                     $mst = new milestone_training;
 
                     ++$lineNo;
-                    $mst_date = trim($content[$lineNo]);
+                    $mst_date = trim($newcontent[$lineNo]);
 //var_dump('date: ' . $mst_date);
 
                     ++$lineNo;
-                    $mst_count = trim($content[$lineNo]);
+                    $mst_count = trim($newcontent[$lineNo]);
 
                     $j = $lineNo + 1;
                     $mst_trainings = "";
-                    while(isset($content[$j]) && !empty(trim($content[$j]))) {
-                        $mst_trainings .= trim($content[$j]) . '\n';
+                    while(isset($newcontent[$j]) && !empty(trim($newcontent[$j]))) {
+                        $mst_trainings .= trim($newcontent[$j]) . '\n';
                         ++$j;
                     }
                     $lineNo = $j;
@@ -419,10 +441,10 @@ class milestone
                     $type = 3;
 
                     ++$lineNo;
-                    $msca_date = trim($content[$lineNo]);
+                    $msca_date = trim($newcontent[$lineNo]);
 
                     ++$lineNo;
-                    $msca_place = trim($content[$lineNo]);
+                    $msca_place = trim($newcontent[$lineNo]);
 
                     $msca_id = milestone_camp::create_msca($msca_date, $msca_place);
 
@@ -433,29 +455,29 @@ class milestone
                     $type = 2;
 
                     ++$lineNo;
-                    $msc_date = trim($content[$lineNo]);
+                    $msc_date = trim($newcontent[$lineNo]);
 
                     ++$lineNo;
-                    $msc_name = trim($content[$lineNo]);
+                    $msc_name = trim($newcontent[$lineNo]);
 
                     ++$lineNo;
-                    $msc_location = trim($content[$lineNo]);
+                    $msc_location = trim($newcontent[$lineNo]);
 
                     ++$lineNo;
-                    $msc_category = trim($content[$lineNo]);
+                    $msc_category = trim($newcontent[$lineNo]);
 
 
                     ++$lineNo;
-                    $msc_place = trim($content[$lineNo]);
+                    $msc_place = trim($newcontent[$lineNo]);
 
                     ++$lineNo;
-                    if (isset($content[$lineNo]) && !empty(trim($content[$lineNo]))) {
+                    if (isset($newcontent[$lineNo]) && !empty(trim($newcontent[$lineNo]))) {
                         ++$lineNo; //mérkőzések szöveg
                         $matches = '';
                         do {
-                            $matches .= trim($content[$lineNo]) . '\n';
+                            $matches .= trim($newcontent[$lineNo]) . '\n';
                             ++$lineNo;
-                        } while (isset($content[$lineNo]) && !empty(trim($content[$lineNo])));
+                        } while (isset($newcontent[$lineNo]) && !empty(trim($newcontent[$lineNo])));
                     }
                     else {
                         $matches = 'null';
@@ -471,17 +493,17 @@ class milestone
                     $type = 4;
 
                     //get season after 'r'
-                    $msr_season = trim(substr($content[$lineNo], 2));
+                    $msr_season = trim(substr($newcontent[$lineNo], 2));
 
                     ++$lineNo;
-                    $msr_date = trim($content[$lineNo]);
+                    $msr_date = trim($newcontent[$lineNo]);
 
                     ++$lineNo;
                     $rankings = '';
                     do {
-                        $rankings .= trim($content[$lineNo]) . '\n';
+                        $rankings .= trim($newcontent[$lineNo]) . '\n';
                         ++$lineNo;
-                    } while (isset($content[$lineNo]) && !empty(trim($content[$lineNo])));
+                    } while (isset($newcontent[$lineNo]) && !empty(trim($newcontent[$lineNo])));
 
                     $msr_id = milestone_ranking::create_msr($msr_date, $rankings, $msr_season);