php image upload problem in IE

I got this php uploading script which is working fine on Mozilla, Chrome, Opera, Safari :

$image1=$_FILES['file1']['name'];
if ($image1)
{
    $filename1 = stripslashes($_FILES['file1']['name']);
    $extension1 = getExtension($filename1);
    $extension1 = strtolower($extension1);
    if (($extension1 != "jpg") && ($extension1 != "jpeg")  && ($extension1 != "gif") && ($extension1 != "png"))
    {
        $errors=1;
    }
    else
    {
        $size1=filesize($_FILES['file1']['tmp_name']);
    list($width1, $height1, $type1, $att开发者_如何转开发r1) = getimagesize($_FILES['file1']['tmp_name']);
    if($width1>=100 and $height1>100)
    {
        if ($size1 > MAX_SIZE*1024)
        {
            $errors=1;
        }
    else
    {
            $newname1="../wallImages/".$image1;
            $copied1 = copy($_FILES['file1']['tmp_name'], $newname1);
            if (!$copied1)
            {
                $errors=1;
            }
    }
    }
    else
    {
    $errors=1;
    }
}
}

My problem occurs only in IE and when try to upload an image I got the error no 4 - UPLOAD_ERR_NO_FILE

Please help me as I have no clue what to do to solve the problem

Thank you

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IE likes to think that jpegs have the 'image/pjpeg' mime type (instead of 'image/jpeg'). That could be be the reason. I would suggest posting your implementation for getExtension(), or making sure that pjpeg is one of your allowed extensions.

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Would help if you could point the line number highlight the line on which you get this error

or you can refer to this simple example it works fine : http://www.w3schools.com/PHP/php_file_upload.asp

hope this helps.

Thanks Ravi Mudaliar