<?php
function Resize_Image($save,$file,$t_w,$t_h,$s_path,$o_path) {
    $s_path = trim($s_path);
    $o_path = trim($o_path);
    $save = $s_path . $save;
    $file = $o_path . $file;
    $ext = strtolower(end(explode('.',$save)));
    list($width, $height) = getimagesize($file) ;
    if(($width>$t_w) OR ($height>$t_h)) {
        $r1 = $t_w/$width;
        $r2 = $t_h/$height;
        if($r1<$r2) {
          $size = $t_w/$width;
        }else{
          $size = $t_h/$height;
        }
    }else{
        $size=1;
    }
    $modwidth = $width * $size;
    $modheight = $height * $size;
    $tn = imagecreatetruecolor($modwidth, $modheight) ;
    switch ($ext) {
        case 'jpg':
        case 'jpeg':
                    $image = imagecreatefromjpeg($file) ;
        break;
        case 'gif':
                    $image = imagecreatefromgif($file) ;
        break;
        case 'png':
                    $image = imagecreatefrompng($file) ;
        break;
    }
    imagecopyresampled($tn, $image, 0, 0, 0, 0, $modwidth, $modheight, $width, $height) ;
    imagejpeg($tn, $save, 100) ;
    return;
}
//just the resize; first one resizes properly, second one resizes sometimes, but dark images tend to turn fully black
Resize_Image($fullname,$fullname,600,600,'fotos/'.$urlnaam.'/large/','fotos/'.$urlnaam.'/large/');
                Resize_Image($fullname,$fullname,120,120,'fotos/'.$urlnaam.'/thumbs/','fotos/'.$urlnaam.'/large/');
?>