How nginx adds watermark to images through PHP proxy

location ~ /image/.*\.(gif|jpg|jpeg|png)$ { proxy_pass http://127.0.0.1:8888/test/watermark?url=$request_uri; }

/** 水印类 * Class Watermark * @package app\test */ class Watermark { /** 合成图片水印 * @param string $dstImage 原图片 * @param string $waterImg 水印图 */ public static function imageMarking($dstImage, $waterImg){ //获取图片信息 $dstInfo = getimagesize($dstImage); $waterInfo = getimagesize($waterImg); //创建图像 $dstImgObj = self::imageCreateFrom($dstImage, $dstInfo[2]); $waterImgObj = self::imageCreateFrom($waterImg, $waterInfo[2]); //合成水印 imagecopyresized($dstImgObj,$waterImgObj,0, 0,0,0,$dstInfo[0], $dstInfo[1],$waterInfo[0],$waterInfo[1]); //输出图片 self::imageOut($dstImgObj,$waterInfo[2]); //销毁资源对象 imagedestroy($dstImgObj); imagedestroy($waterImgObj); } /** 生成图片对象 * @param string $imgFile 图片路径 * @param string $type 图片类型 * @return false|\GdImage|resource */ private static function imageCreateFrom($imgFile, $type) { switch ($type) { case IMAGETYPE_GIF: return imagecreatefromgif($imgFile); case IMAGETYPE_JPEG: return imagecreatefromjpeg($imgFile); case IMAGETYPE_PNG: return imagecreatefrompng($imgFile); default : //其他格式 } } /** 输出图片 * @param string $imageObj * @param string $type */ private static function imageOut($imageObj,$type){ switch ($type) { case 1: header("Content-Type: image/gif"); imagegif($imageObj); break; case 2: header("Content-Type: image/jpeg"); imagejpeg($imageObj); break; case 3: header("Content-Type: image/png"); imagepng($imageObj); break; default: //其他格式 } } }

public function watermark(){ //图片路径前缀 $image = '/data/img/' . input('url'); self::imageMarking($image,'watermark.png'); exit; }