php图片加中文水印实现代码分享
例1
复制代码 代码如下:
Header("Content-type: image/png"); /*通知浏览器,要输出图像*/
$im = imagecreate(400 , 300); /*定义图像的大小*/
$gray = ImageColorAllocate($im , 235 , 235 , 235);
$pink = ImageColorAllocate($im, 255 , 128 , 255);
$fontfile = "simkai.ttf";
/* $fontfile 字体的路径,视操作系统而定,可以是 simhei.ttf(黑体) , SIMKAI.TTF(楷体) , SIMFANG.TTF(仿宋) ,SIMSUN.TTC(宋体&新宋体) 等 GD 支持的中文字体*/
$str = iconv('GB2312','UTF-8','中文水印'); /*将 gb2312 的字符集转换成 UTF-8 的字符*/
ImageTTFText($im, 30, 0, 100, 200, $pink , $fontfile , $str);
/* 加入中文水印 */
Imagepng($im);
ImageDestroy($im);
?>
例2
复制代码 代码如下:
// **************************************** //
// 功能:给图片添加文字
// 参数: $img 图片文件名
// $new_img 另存图片文件名,如果为空表示不另存图片
// $text 字符串内容
// text_size 字符串大小
// text_angle 字型串输出角度
// text_x 字符串输出 x 坐标
// text_y 字符串输出 y 坐标
// $text_font 字型文件名
// $r,$g,$b 字符串颜色RGB值
// **************************************** //
function img_text($img, $new_img, $text, $text_size, $text_angle, $text_x, $text_y, $text_font, $r, $g, $b){
$text=iconv("gb2312","UTF-8",$text);
Header("Content-type: image/gif");
$im = @imagecreatefromstring(file_get_contents($img)) or die ("打开图片失败!");
$color = ImageColorAllocate($im, $r,$g,$b);
//ImageTTFText(int im, int size, int angle, int x, int y, int col, string fontfile, string text):
//本函数将 TTF (TrueType Fonts) 字型文字写入图片。
//参数: size 为字形的尺寸;
// angle 为字型的角度,顺时针计算,0 度为水平(由左到右),90 度则为由下到上的文字;
// x,y 二参数为文字的坐标值 (原点为左上角);
// col 为字的颜色;
// fontfile 为字型文件名称;
// text 是字符串内容。
ImageTTFText($im, $text_size, $text_angle, $text_x, $text_y, $color, $text_font, $text);
if ($new_img==""):
ImageGif($im); // 不保存图片,只显示
else:
ImageGif($im,$new_img); // 保存图片,但不显示
endif;
ImageDestroy($im); //结束图形,释放内存空间
}
?>
例3
复制代码 代码如下:
/*
* 功能:PHP图片水印 (水印支持图片或文字)
* 参数:
* $groundImage 背景图片,即需要加水印的图片,暂只支持GIF,JPG,PNG格式;
* $waterPos 水印位置,有10种状态,0为随机位置;
* 1为顶端居左,2为顶端居中,3为顶端居右;
* 4为中部居左,5为中部居中,6为中部居右;
* 7为底端居左,8为底端居中,9为底端居右;
* $waterImage 图片水印,即作为水印的图片,暂只支持GIF,JPG,PNG格式;
* $waterText 文字水印,即把文字作为为水印,支持ASCII码,不支持中文;
* $textFont 文字大小,值为1、2、3、4或5,默认为5;
* $textColor 文字颜色,值为十六进制颜色值,默认为#FF0000(红色);
*
* 注意:Support GD 2.0,Support FreeType、GIF Read、GIF Create、JPG 、PNG
* $waterImage 和 $waterText 最好不要同时使用,选其中之一即可,优先使用 $waterImage。
* 当$waterImage有效时,参数$waterString、$stringFont、$stringColor均不生效。
* 加水印后的图片的文件名和 $groundImage 一样。
* 作者:longware @ 2004-11-3 14:15:13
*/
function imageWaterMark($groundImage,$waterPos=0,$waterImage=”",$waterText=”",$textFont=5,$textColor=”#FF0000″)
{
$isWaterImage = FALSE;
$formatMsg = “暂不支持该文件格式,请用图片处理软件将图片转换为GIF、JPG、PNG格式。”;
//读取水印文件
if(!emptyempty($waterImage) && file_exists($waterImage))
{
$isWaterImage = TRUE;
$water_info = getimagesize($waterImage);
$water_w = $water_info[0];//取得水印图片的宽
$water_h = $water_info[1];//取得水印图片的高
switch($water_info[2])//取得水印图片的格式
{
case 1:$water_im = imagecreatefromgif($waterImage);break;
case 2:$water_im = imagecreatefromjpeg($waterImage);break;
case 3:$water_im = imagecreatefrompng($waterImage);break;
default:die($formatMsg);
}
}
//读取背景图片
if(!emptyempty($groundImage) && file_exists($groundImage))
{
$ground_info = getimagesize($groundImage);
$ground_w = $ground_info[0];//取得背景图片的宽
$ground_h = $ground_info[1];//取得背景图片的高
switch($ground_info[2])//取得背景图片的格式
{
case 1:$ground_im = imagecreatefromgif($groundImage);break;
case 2:$ground_im = imagecreatefromjpeg($groundImage);break;
case 3:$ground_im = imagecreatefrompng($groundImage);break;
default:die($formatMsg);
}
}
else
{
die(”需要加水印的图片不存在!”);
}
//水印位置
if($isWaterImage)//图片水印
{
$w = $water_w;
$h = $water_h;
$label = “图片的”;
}
else//文字水印
{
$temp = imagettfbbox(ceil($textFont*5),0,”./cour.ttf”,$waterText);//取得使用 TrueType 字体的文本的范围
$w = $temp[2] - $temp[6];
$h = $temp[3] - $temp[7];
unset($temp);
$label = “文字区域”;
}
if( ($ground_w{
echo “需要加水印的图片的长度或宽度比水印”.$label.”还小,无法生成水印!”;
return;
}
switch($waterPos)
{
case 0://随机
$posX = rand(0,($ground_w - $w));
$posY = rand(0,($ground_h - $h));
break;
case 1://1为顶端居左
$posX = 0;
$posY = 0;
break;
case 2://2为顶端居中
$posX = ($ground_w - $w) / 2;
$posY = 0;
break;
case 3://3为顶端居右
$posX = $ground_w - $w;
$posY = 0;
break;
case 4://4为中部居左
$posX = 0;
$posY = ($ground_h - $h) / 2;
break;
case 5://5为中部居中
$posX = ($ground_w - $w) / 2;
$posY = ($ground_h - $h) / 2;
break;
case 6://6为中部居右
$posX = $ground_w - $w;
$posY = ($ground_h - $h) / 2;
break;
case 7://7为底端居左
$posX = 0;
$posY = $ground_h - $h;
break;
case 8://8为底端居中
$posX = ($ground_w - $w) / 2;
$posY = $ground_h - $h;
break;
case 9://9为底端居右
$posX = $ground_w - $w;
$posY = $ground_h - $h;
break;
default://随机
$posX = rand(0,($ground_w - $w));
$posY = rand(0,($ground_h - $h));
break;
}
//设定图像的混色模式
imagealphablending($ground_im, true);
if($isWaterImage)//图片水印
{
imagecopy($ground_im, $water_im, $posX, $posY, 0, 0, $water_w,$water_h);//拷贝水印到目标文件
}
else//文字水印
{
if( !emptyempty($textColor) && (strlen($textColor)==7) )
{
$R = hexdec(substr($textColor,1,2));
$G = hexdec(substr($textColor,3,2));
$B = hexdec(substr($textColor,5));
}
else
{
die(”水印文字颜色格式不正确!”);
}
imagestring ( $ground_im, $textFont, $posX, $posY, $waterText, imagecolorallocate($ground_im, $R, $G, $B));
}
//生成水印后的图片
@unlink($groundImage);
switch($ground_info[2])//取得背景图片的格式
{
case 1:imagegif($ground_im,$groundImage);break;
case 2:imagejpeg($ground_im,$groundImage);break;
case 3:imagepng($ground_im,$groundImage);break;
default:die($errorMsg);
}
//释放内存
if(isset($water_info)) unset($water_info);
if(isset($water_im)) imagedestroy($water_im);
unset($ground_info);
imagedestroy($ground_im);
}
//—————————————————————————————
$id=$_REQUEST['id'];
$num = count($_FILES['userfile']['name']);
print_r($_FILES['userfile']);
print_r($_FILES['userfile']['name']);
echo $num;
echo “
”;
if(isset($id)){
for($i=0;$iif(isset($_FILES) && !emptyempty($_FILES['userfile']) && $_FILES['userfile']['size']>0)
{
$uploadfile = “./”.time().”_”.$_FILES['userfile'][name][$i];
echo “
”;
echo $uploadfile;
if (copy($_FILES['userfile']['tmp_name'][$i], $uploadfile))
{
echo “OK
”;
//文字水印
//imageWaterMark($uploadfile,5,”",”HTTP://www.lvye.info”,5,”#cccccc“);
//图片水印
$waterImage=”logo_ok1.gif”;//水印图片路径
imageWaterMark($uploadfile,9,$waterImage);
echo “”;
}
else
{
echo “Fail
”;
}
}
}
}
?>
代码4
复制代码 代码如下:
增加中文水印
/*-------------------------------------------------------------
**描述:这是用于给指定图片加底部水印(不占用图片显示区域)的自定义类,需创建对象调用
**创建:2007-10-09
**更新:2007-10-09
**说明:1、需要gd库支持,需要iconv支持(php5已经包含不用加载)
2、只适合三种类型的图片,jpg/jpeg/gif/png,其它类型不处理
3、注意图片所在目录的属性必须可写
4、调用范例:
$objImg = new MyWaterDownChinese();
$objImg->Path = "images/";
$objImg->FileName = "1.jpg";
$objImg->Text = "HAHAKONGJIAN[url]HTTP://HI.BAIDU.COM/LYSONCN[/url]";
$objImg->Font = "./font/simhei.ttf";
$objImg->Run();
**成员函数:
----------------------------------------------------------------*/
class MyWaterDownChinese{
var $Path = "./"; //图片所在目录相对于调用此类的页面的相对路径
var $FileName = ""; //图片的名字,如“1.jpg”
var $Text = ""; //图片要加上的水印文字,支持中文
var $TextColor = "#ffffff"; //文字的颜色,gif图片时,字体颜色只能为黑色
var $TextBgColor = "#000000"; //文字的背景条的颜色
var $Font = "c://windows//fonts//simhei.ttf"; //字体的存放目录,相对路径
var $OverFlag = true; //是否要覆盖原图,默认为覆盖,不覆盖时,自动在原图文件名后+"_water_down",如“1.jpg”=> "1_water_down.jpg"
var $BaseWidth = 200; //图片的宽度至少要>=200,才会加上水印文字。
//------------------------------------------------------------------
//功能:类的构造函数(php5.0以上的形式)
//参数:无
//返回:无
function __construct(){;}
//------------------------------------------------------------------
//功能:类的析构函数(php5.0以上的形式)
//参数:无
//返回:无
function __destruct(){;}
//------------------------------------------------------------------
//------------------------------------
//功能:对象运行函数,给图片加上水印
//参数:无
//返回:无
function Run()
{
if($this->FileName == "" || $this->Text == "")
return;
//检测是否安装GD库
if(false == function_exists("gd_info"))
{
echo "系统没有安装GD库,不能给图片加水印.";
return;
}
//设置输入、输出图片路径名
$arr_in_name = explode(".",$this->FileName);
//
$inImg = $this->Path.$this->FileName;
$outImg = $inImg;
$tmpImg = $this->Path.$arr_in_name[0]."_tmp.".$arr_in_name[1]; //临时处理的图片,很重要
if(!$this->OverFlag)
$outImg = $this->Path.$arr_in_name[0]."_water_down.".$arr_in_name[1];
//检测图片是否存在
if(!file_exists($inImg))
return ;
//获得图片的属性
$groundImageType = @getimagesize($inImg);
$imgWidth = $groundImageType[0];
$imgHeight = $groundImageType[1];
$imgType = $groundImageType[2];
if($imgWidth BaseWidth) //小于基本宽度,不处理
return;
//图片不是jpg/jpeg/gif/png时,不处理
switch($imgType)
{
case 1:
$image = imagecreatefromgif($inImg);
$this->TextBgColor = "#ffffff"; //gif图片字体只能为黑,所以背景颜色就设置为白色
break;
case 2:
$image = imagecreatefromjpeg($inImg);
break;
case 3:
$image = imagecreatefrompng($inImg);
break;
default:
return;
break;
}
//创建颜色
$color = @imagecolorallocate($image,hexdec(substr($this->TextColor,1,2)),hexdec(substr($this->TextColor,3,2)),hexdec(substr($this->TextColor,5,2))); //文字颜色
//生成一个空的图片,它的高度在底部增加水印高度
$newHeight = $imgHeight+20;
$objTmpImg = @imagecreatetruecolor($imgWidth,$newHeight);
$colorBg = @imagecolorallocate($objTmpImg,hexdec(substr($this->TextBgColor,1,2)),hexdec(substr($this->TextBgColor,3,2)),hexdec(substr($this->TextBgColor,5,2))); //背景颜色
//填充图片的背景颜色
@imagefill ($objTmpImg,0,0,$colorBg);
//把原图copy到临时图片中
@imagecopy($objTmpImg,$image,0,0,0,0,$imgWidth,$imgHeight);
//创建要写入的水印文字对象
$objText = $this->createText($this->Text);
//计算要写入的水印文字的位置
$x = 5;
$y = $newHeight-5;
//写入文字水印
@imagettftext($objTmpImg,10,0,$x,$y,$color,$this->Font,$objText);
//生成新的图片,临时图片
switch($imgType)
{
case 1:
imagegif($objTmpImg,$tmpImg);
break;
case 2:
imagejpeg($objTmpImg,$tmpImg);
break;
case 3:
imagepng($objTmpImg,$tmpImg);
break;
default:
return;
break;
}
//释放资源
@imagedestroy($objTmpImg);
@imagedestroy($image);
//重新命名文件
if($this->OverFlag)
{
//覆盖原图
@unlink($inImg);
@rename($tmpImg,$outImg);
}
else
{
//不覆盖原图
@rename($tmpImg,$outImg);
}
}
//--------------------------------------
//功能:创建水印文字对象
//参数:无
//返回:创建的水印文字对象
function createText($instring)
{
$outstring="";
$max=strlen($instring);
for($i=0;$i{
$h=ord($instring[$i]);
if($h>=160 && $i{
$outstring .= "".base_convert(bin2hex(iconv("gb2312","ucs-2",substr($instring,$i,2))),16,10).";";
$i++;
}
else
{
$outstring .= $instring[$i];
}
}
return $outstring;
}
}//class
?>

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