[MySQL][PHP]: imagesx() expects parameter 1 to be resource Opcje

[habuuu]

Witam mam problem z tworzeniem miniaturki do zdjęcia wyskakują mi następujące błędy

Notice: Undefined variable: img

Warning: imagesx() expects parameter 1 to be resource, null given

Warning: imagesy() expects parameter 1 to be resource, null given

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<?php
 
 
function findExtension ($filename)
{
   $filename = strtolower($filename) ;
   $exts = explode("[/\\.]", $filename) ;
   $n = count($exts)-1;
   $exts = $exts[$n];
   return $exts;
}
 
 
function imagecreatefromunknown($path) {
 
   $ext = findExtension($path);
 
   switch ($ext) {
      case "jpg":
        $img = imagecreatefromjpeg($path);
        break;
      case "gif":
        $img = imagecreatefromgif($path);
        break;
      case "png":
        $img = imagecreatefrompng($path);
        break;
  }
 
  return $img; 
}
 
 
 
$max = 3;
$total = 0;
 
 
if (isset($_POST["tags1"])) {
 
   $date = date("d-m-y");
   $lastaccess = date("y-m-d");
   $ip= $_SERVER['REMOTE_ADDR'];
 
 
   for ($i=1; $i < ($max+1); $i++)
   {  
      if (trim($_FILES["image" . $i]["name"]) != "")  {
 
           $total = $total + 1;
           if ( (trim($_POST["tags" . $i]) != "") ) {
 
                $tags = htmlspecialchars(trim($_POST["tags" . $i]));
 
                $name = "image" . $i;
 
 
                if (( ($_FILES[$name]["type"] == "image/gif")
                   || ($_FILES[$name]["type"] == "image/jpeg")
                   || ($_FILES[$name]["type"] == "image/pjpeg")
                   || ($_FILES[$name]["type"] == "image/x-png")
                   || ($_FILES[$name]["type"] == "image/bmp")
                   || ($_FILES[$name]["type"] == "image/png")))
                {
 
                $size = intval(($_FILES[$name]["size"] / 1024) / 1024);
 
                 if ($session == true) 
                    $limit = $maxsizemember;
                 else
                    $limit = $maxsizeguest;  
 
                   if ($size > $limit)
                       die ("Przepraszamy! Rozmiar zdjęcia przekracza limit MB.");
 
 
                   if ($_FILES[$name]["error"] > 0)  {
                       die("Error: " . $_FILES[$name]["error"]);
                   }
                   else {
                       $n = $_FILES[$name]["name"];
                       $rndName = md5($n . date("d-m-y") . time()) . "." . findExtension($n);
                       $uploadPath = "pictures/" . $rndName;
                       $tempPath = $_FILES[$name]["tmp_name"];
                       move_uploaded_file($tempPath, $uploadPath);
                   }
 
                }
                else
                   die("Sorry ! \"{$_FILES[$name]["name"]}\" nie prawidłowy format zdjęcia.");
 
 
                $imagePath = $uploadPath;
 
 
 
                $img = imagecreatefromunknown($imagePath);
 
                $mainWidth = imagesx($img);
                $mainHeight = imagesy($img);
 
                if (($mainWidth > 150) && ($mainWidth < 2000) && ($mainHeight < 1600)) 
                { 
 
                 $a = ($mainWidth >= $mainHeight) ? $mainWidth : $mainHeight; 
 
                 $div = $a / 150;
                 $thumbWidth = intval($mainWidth / $div);
                 $thumbHeight = intval($mainHeight / $div);
 
 
                 $myThumb = imagecreatetruecolor($thumbWidth, $thumbHeight);
                 imagecopyresampled($myThumb, $img, 0, 0, 0, 0, $thumbWidth, $thumbHeight, $mainWidth, $mainHeight);
                 $thumbPath = "thumbnails/" . basename($imagePath);
                 imagejpeg($myThumb, $thumbPath);
 
 
 
 
 
                 if (($type == "public") && ($watermark == "true")) {
                     $imgMark = imagecreatefromgif("watermark.gif");
 
                     $dX = $mainWidth - imagesx($imgMark);
                     $dY = $mainHeight - imagesy($imgMark);
                     imagecopymerge($img, $imgMark, $dX, $dY, 0, 0, imagesx($imgMark), imagesy($imgMark), 40); 
 
                     $ext = findExtension($imagePath);
 
                     switch ($ext) {
                       case "jpg":
                          imagejpeg($img, $imagePath);  break;
                       case "png":
                          imagepng($img, $imagePath);   break;
                     }
                 }
 
 
 
                 $details = intval(filesize($imagePath) / 1024) . " kb (" . $mainWidth . " x " . $mainHeight . ")" ; 
                 $id = md5($thumbPath . date("d-m-y") . time());                  
?>
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