영카트에서 상품이미지들 사이즈 조절 질문이요! 채택완료

// 상품 이미지를 얻는다function get_it_image($it_id, $width, $height=0, $anchor=false, $img_id='', $img_alt=''){    global $g5;    if(!$it_id || !$width)        return '';    $sql = " select it_id, it_img1, it_img2, it_img3, it_img4, it_img5, it_img6, it_img7, it_img8, it_img9, it_img10 from {$g5['g5_shop_item_table']} where it_id = '$it_id' ";    $row = sql_fetch($sql);    if(!$row['it_id'])        return '';    for($i=1;$i<=10; $i++) {        $file = G5_DATA_PATH.'/item/'.$row['it_img'.$i];        if(is_file($file) && $row['it_img'.$i]) {            $size = @getimagesize($file);            if($size[2] < 1 || $size[2] > 3)                continue;            $filename = basename($file);            $filepath = dirname($file);            $img_width = $size[0];            $img_height = $size[1];            break;        }    }    if($img_width && !$height) {        $height = round(($width * $img_height) / $img_width);    }    if($filename) {        //thumbnail($filename, $source_path, $target_path, $thumb_width, $thumb_height, $is_create, $is_crop=false, $crop_mode='center', $is_sharpen=true, $um_value='80/0.5/3')        $thumb = thumbnail($filename, $filepath, $filepath, $width, $height, false, true, 'center', false, $um_value='80/0.5/3');    }    if($thumb) {        $file_url = str_replace(G5_PATH, G5_URL, $filepath.'/'.$thumb);        $img = '<img src="'.$file_url.'" width="'.$width.'" height="'.$height.'" alt="'.$img_alt.'"';    } else {        $img = '<img src="'.G5_SHOP_URL.'/img/no_image.gif" width="'.$width.'"';        if($height)            $img .= ' height="'.$height.'"';        $img .= ' alt="'.$img_alt.'"';    }    if($img_id)        $img .= ' id="'.$img_id.'"';    $img .= '>';    if($anchor)        $img = '<a href="'.G5_SHOP_URL.'/item.php?it_id='.$it_id.'">'.$img.'</a>';    return $img;}