之前很多讀者發郵件問我如何使用PHP生成水印,今天我就來給大家講解一下。本篇PHP教程使用了兩個函數來生成水印:watermark_text()和watermark_image()。你可以將本篇教程的示例整合到你的WEB項目中,比如上傳圖片的版權水印。
文本水印
我們使用函數watermark_text()來生成文本水印,你必須先指定字體源文件、字體大小和字體文本,具體代碼如下:
- $font_path = "GILSANUB.TTF"; // Font file
- $font_size = 30; // in pixcels
- $water_mark_text_2 = "phpfuns"; // Watermark Text
- function watermark_text($oldimage_name, $new_image_name)
- {
- global $font_path, $font_size, $water_mark_text_2;
- list($owidth,$oheight) = getimagesize($oldimage_name);
- $width = $height = 300;
- $image = imagecreatetruecolor($width, $height);
- $image_src = imagecreatefromjpeg($oldimage_name);
- imagecopyresampled($image, $image_src, 0, 0, 0, 0, $width, $height, $owidth, $oheight);
- $blue = imagecolorallocate($image, 79, 166, 185);
- imagettftext($image, $font_size, 0, 68, 190, $blue, $font_path, $water_mark_text_2);
- imagejpeg($image, $new_image_name, 100);
- imagedestroy($image);
- unlink($oldimage_name);
- return true;
- }
可以在這裡