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            PHP圖片加水印十分簡單的代碼

            時間:2024-11-05 21:31:32 PHP 我要投稿
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            PHP圖片加水印十分簡單的代碼

              PHP圖片加水印十分簡單的代碼

              文字水印:

              復制代碼 代碼如下:

              $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); //畫一矩形并填充

              // 把字符串寫在圖像左上角

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

              // 輸出圖像

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

              imagejpeg($im);

              imagedestroy($im);

              圖片水印

              $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);

              合并圖片php提供了很多函數:例如:imagecopymerge,imagecopyresized

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