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PHP图片加水印十分简单的代码

时间:2024-07-17 23:13:18 PHP 我要投稿
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PHP图片加水印十分简单的代码

  PHP图片加水印十分简单的代码

  文字水印:

  复制代码 代码如下:

  $w = 80;

  $h = 20;

  $im = imagecreatetruecolor($w,$h);

  $textcolor = imagecolorallocate($im, 123, 12, 255);

  $white = imagecolorallocate($im, 255, 255, 255);

  $grey = imagecolorallocate($im, 128, 128, 128);

  $black = imagecolorallocate($im, 0, 0, 0);

  imagefilledrectangle($im, 0, 0, 399, 29, $grey); //画一矩形并填充

  // 把字符串写在图像左上角

  imagestring($im, 3, 2, 3, "Hello world!", $textcolor);

  // 输出图像

  header("Content-type: image/jpeg");

  imagejpeg($im);

  imagedestroy($im);

  图片水印

  $groundImg = "DSC05940.jpeg";

  $groundInfo = getimagesize($groundImg);

  $ground_w = $groundInfo[0];

  //print_r($groundInfo);

  $ground_h = $groundInfo[1];

  switch($groundInfo[2]){

  case 1:

  $ground_im = imagecreatefromgif($groundImg);

  break;

  case 2:

  $ground_im = imagecreatefromjpeg($groundImg);

  break;

  case 3:

  $ground_im = imagecreatefrompng($groundImg);

  break;

  }

  $waterImg = "DSC05949.jpeg";

  $imgInfo =getimagesize($waterImg);

  $water_w = $imgInfo[0];

  $water_w = $imgInfo[1];

  switch($imgInfo[2]){

  case 1:

  $water_im = imagecreatefromgif($waterImg);

  break;

  case 2:

  $water_im = imagecreatefromjpeg($waterImg);

  break;

  case 3:

  $water_im = imagecreatefrompng($waterImg);

  break;

  }

  imagecopy($ground_im,$water_im,100,100,0,0,500,500);

  header("Content-type: image/jpeg");

  imagejpeg($ground_im);

  合并图片php提供了很多函数:例如:imagecopymerge,imagecopyresized

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