PHP实例:实现给上传图片加水印图案

    echo " 长度:".$image_size[1];
    echo "<br> 大小:".$file["size"]." bytes";
    if($watermark==1)
    {
        $iinfo=getimagesize($destination,$iinfo);
        $nimage=imagecreatetruecolor($image_size[0],$image_size[1]);
        $white=imagecolorallocate($nimage,255,255,255);
        $black=imagecolorallocate($nimage,0,0,0);
        $red=imagecolorallocate($nimage,255,0,0);
        imagefill($nimage,0,0,$white);
        seover='isShowAds = false;isShowAds2 = false;isShowGg = true;InTextAds_GgLayer="switch";KeyGate_ads.ShowGgAds(this,"switch",event)' style="BORDER-RIGHT: 0px; PADDING-RIGHT: 0px; BORDER-TOP: 0px; PADDING-LEFT: 0px; FONT-WEIGHT: normal; PADDING-BOTTOM: 0px; MARGIN: 0px; BORDER-LEFT: 0px; CURSOR: hand; COLOR: #0000ff; PADDING-TOP: 0px; BORDER-BOTTOM: 0px; TEXT-DECORATION: underline" onclick='javascript:window.open("http://pagead2.googlesyndication.com/pagead/iclk?sa=l&ai=BydHONvQbR6jQDYiosAL16pls_sHiKNag_7IDwI23AaCcARADGAMghLTiBygUOABQlKyTkQZgndHWgbgFsgEPd3d3Lmtub3dza3kuY29tyAEB2gEiaHR0cDovL3d3dy5rbm93c2t5LmNvbS8zNDc2NjIuaHRtbIACAakCdAFLh0vggT7IAvKipwOoAwHoA7MD6APuAugD3QQ&num=3&adurl=http://www.alldown.net/download/picasa.htm&client=ca-pub-0892797939732602");GgKwClickStat("switch","www.alldown.net","afc","2000025465");' onmouseout='isShowGg = false;InTextAds_GgLayer="switch"'>switch ($iinfo[2])
        {
            seover='isShowAds = false;isShowAds2 = false;isShowGg = true;InTextAds_GgLayer="case";KeyGate_ads.ShowGgAds(this,"case",event)' style="BORDER-RIGHT: 0px; PADDING-RIGHT: 0px; BORDER-TOP: 0px; PADDING-LEFT: 0px; FONT-WEIGHT: normal; PADDING-BOTTOM: 0px; MARGIN: 0px; BORDER-LEFT: 0px; CURSOR: hand; COLOR: #0000ff; PADDING-TOP: 0px; BORDER-BOTTOM: 0px; TEXT-DECORATION: underline" onclick='javascript:window.open("http://pagead2.googlesyndication.com/pagead/iclk?sa=l&ai=BkmjJNvQbR6jQDYiosAL16plsvPC2K9DGgNMCwI23AYCWwAQQARgBIIS04gcoFDgAUL2lkKgDYJ3R1oG4BbIBD3d3dy5rbm93c2t5LmNvbcgBAdoBImh0dHA6Ly93d3cua25vd3NreS5jb20vMzQ3NjYyLmh0bWyAAgGpAvS8P0acemA-qAMB6AOzA-gD7gLoA90E&num=1&adurl=http://www.switronic.com.tw&client=ca-pub-0892797939732602");GgKwClickStat("case","www.switronic.com.tw","afc","2000025465");' onmouseout='isShowGg = false;InTextAds_GgLayer="case"'>case 1:
            $simage =imagecreatefromgif($destination);
            break;
            case 2:
            $simage =imagecreatefromjpeg($destination);
            break;
            case 3:
            $simage =imagecreatefrompng($destination);
            break;
            case 6:
            $simage =imagecreatefromwbmp($destination);
            break;
            default:
            die("不支持的文件类型");