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    <?php 
      /** 
       * ͼƬÌi¼Óˮӡ 
       * $target Ô´ÎļþÂ*¾¶ 
       * $wtrmrk_file ˮӡͼƬÂ*¾¶ 
       * $newcopy Ìi¼ÓˮӡºoµÄͼƬÂ*¾¶ 
       * 
       */ 
      public function watermark_image($target, $wtrmrk_file, $newcopy) { 
        $watermark = imagecreatefrompng($wtrmrk_file); 
        imagealphablending($watermark, false); 
        imagesavealpha($watermark, true); 
        $img = imagecreatefromjpeg($target); 
        $img_w = imagesx($img); 
        $img_h = imagesy($img); 
        $wtrmrk_w = imagesx($watermark); 
        $wtrmrk_h = imagesy($watermark); 
        $dst_x = ($img_w ) ¨C ($wtrmrk_w); // For centering the watermark on any image //phpfensi.com 
        $dst_y = ($img_h) ¨C ($wtrmrk_h ); // For centering the watermark on any image 
        imagecopy($img, $watermark, $dst_x, $dst_y, 0, 0, $wtrmrk_w, $wtrmrk_h); 

        imagejpeg($img, $newcopy, 100); 
        imagedestroy($img); 
        imagedestroy($watermark); 
        //return $img; 
      } 
    ?> 

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