hi all, i choose a image file from form field and upload. but the browser shows such errors: Notice: Undefined variable: uploadfile in c:\program files\apache group\apache\htdocs\u-r\upload.php on line 20 Notice: Undefined variable: uploadfile in c:\program files\apache group\apache\htdocs\u-r\upload.php on line 23 Warning: imagecopyresampled(): supplied argument is not a valid Image resource in c:\program files\apache group\apache\htdocs\u-r\upload.php on line 37 Notice: Undefined index: uploadfile in c:\program files\apache group\apache\htdocs\u-r\upload.php on line 42 Warning: imagedestroy(): supplied argument is not a valid Image resource in c:\program files\apache group\apache\htdocs\u-r\upload.php on line 45 could anyone help me, please. here is the resizing code: <?php $uploadedfile = $_FILES['uploadfile']['tmp_name']; $src = imagecreatefromjpeg($uploadfile); list($width,$height)=getimagesize($uploadfile); $newwidth=260; $newheight=195; $tmp=imagecreatetruecolor($newwidth,$newheight); imagecopyresampled($tmp,$src,0,0,0,0,$newwidth,$newheight,$width,$height); $filename = "../images". $_FILES['uploadfile']['name']; imagedestroy($src); imagedestroy($tmp); ?>