php上传加水印,PHP 实现图片上传并添加水印的方法

╰半夏微凉° 2022-10-21 13:53 274阅读 0赞

下面为各位大家介绍一下PHP图片上传并添加水印的方法 ，感兴趣的小伙伴一起来看看吧。 经测试代码如下：

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(!empty($waterImage) && file\_exists($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(!empty($groundImage) && file\_exists($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\*2.5),"c:/windows/fonts/stcaiyun.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\_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,$water\_w,$water\_h);//拷贝水印到目标文件

else//文字水印

if( !empty($textColor) && (strlen($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,$waterText,imagecolorallocate($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);

//---------------------------------------------------------------------------------------

if(isset($\_FILES) && !empty($\_FILES\['userfile'\]) && $\_FILES\['userfile'\]\['size'\]>0)

$uploadfile = "./".time()."\_".$\_FILES\['userfile'\]\['name'\];

if (copy($\_FILES\['userfile'\]\['tmp\_name'\],$uploadfile))

echo "OK  
";

//文字水印

// imageWaterMark($uploadfile,9,"./trtt.png","www.zg700.com",5,"\#FF0000");

//图片水印

$waterImage="./shuiyin.png";//水印图片路径

imageWaterMark($uploadfile,$waterImage);

echo "![%5C%22%22.%24uploadfile.%22%5C%22][5C_22_22._24uploadfile._22_5C_22]";

else

echo "Fail  
";

/\*\*\* 来自：编程之家 jb51.cc(jb51.cc) \*\*\*/上传.html

经测试代码如下：

文件:

这里只是简单介绍一下PHP图片上传并添加水印的方法 的内容，仅供大家参考。有兴趣的可以继续浏览下页。

总结

如果觉得编程之家网站内容还不错，欢迎将编程之家网站推荐给程序员好友。

本图文内容来源于网友网络收集整理提供，作为学习参考使用，版权属于原作者。

[5C_22_22._24uploadfile._22_5C_22]:

php上传加水印,PHP 实现图片上传并添加水印的方法

发表评论取消回复

还没有评论，来说两句吧...

相关阅读

相关微信小程序拍照上传加水印

相关图片上传加水印

相关 uniApp图片加水印

相关 uniapp图片加水印

相关 php上传加水印,PHP 实现图片上传并添加水印的方法

相关 JAVA实现图片加水印及Base64图片字符串加水印

相关基于Spring Boot实现图片上传/加水印

相关给图片添加图片水印、文字水印、马赛克

相关 java 图片加水印

相关 php使用Imagick实现添加文字水印的图片功能