PHP实现生成模糊图片的方法示例

yuchao

            本文实例讲述了PHP实现生成模糊图片的方法。分享给大家供大家参考，具体如下：
image_create_from_ext($srcImg);
  $srcImgObj=$this->blur($gdImageResource,$blurFactor);
  $temp = pathinfo($srcImg);
  $name = $temp['basename'];
  $path = $temp['dirname'];
  $exte = $temp['extension'];
  $savename = $savename ? $savename : $name;
  $savepath = $savepath ? $savepath : $path;
  $savefile = $savepath .'/'. $savename;
  $srcinfo = @getimagesize($srcImg);
  switch ($srcinfo[2]) {
   case 1: imagegif($srcImgObj, $savefile); break;
   case 2: imagejpeg($srcImgObj, $savefile); break;
   case 3: imagepng($srcImgObj, $savefile); break;
   default: return '保存失败'; //保存失败
  }
  return $savefile;
  imagedestroy($srcImgObj);
}
/**
* Strong Blur
*
* @param $gdImageResource 图片资源
* @param $blurFactor   可选择的模糊程度
* 可选择的模糊程度 0使用 3默认 超过5时 极其模糊
* @return GD image 图片资源类型
* @author Martijn Frazer, idea based on http://stackoverflow.com/a/20264482
*/
private function blur($gdImageResource, $blurFactor = 3)
{
  // blurFactor has to be an integer
  $blurFactor = round($blurFactor);
  $originalWidth = imagesx($gdImageResource);
  $originalHeight = imagesy($gdImageResource);
  $smallestWidth = ceil($originalWidth * pow(0.5, $blurFactor));
  $smallestHeight = ceil($originalHeight * pow(0.5, $blurFactor));
  // for the first run, the previous image is the original input
  $prevImage = $gdImageResource;
  $prevWidth = $originalWidth;
  $prevHeight = $originalHeight;
  // scale way down and gradually scale back up, blurring all the way
  for($i = 0; $i gaussian_blur("./1.jpg",null,null,3);
?>