PHP uses Gaussian algorithm to blur images

How to blur images in php? This article mainly introduces the use of Gaussian algorithm in PHP to realize the blur processing function of images, and analyzes the related operation skills of PHP graphics processing in the form of examples. Friends in need can refer to it. I hope to be helpful.

The details are as follows:

<?php
class image_blur{
   function gaussian_blur($srcImg,$savepath=null,$savename=null,$blurFactor=3){
    $gdImageResource=$this->image_create_from_ext($srcImg);
    $srcImgObj=$this->blur($gdImageResource,$blurFactor);
    $temp = pathinfo($srcImg);
    $name = $temp[&#39;basename&#39;];
    $path = $temp[&#39;dirname&#39;];
    $exte = $temp[&#39;extension&#39;];
    $savename = $savename ? $savename : $name;
    $savepath = $savepath ? $savepath : $path;
    $savefile = $savepath .&#39;/&#39;. $savename;
    $srcinfo = @getimagesize($srcImg);
    switch ($srcinfo[2]) {
      case1: imagegif($srcImgObj, $savefile); break;
      case2: imagejpeg($srcImgObj, $savefile); break;
      case3: imagepng($srcImgObj, $savefile); break;
      default: return&#39;保存失败&#39;; //保存失败
    }
    return $savefile;
    imagedestroy($srcImgObj);
  }
}
$image_blur = new image_blur();
//blurFactor的值代表模糊程度，savepath为空时候直接覆盖，savename为空直接用原名
$image_blur->gaussian_blur($srcImg="./5.jpg",$savepath=null,$savename=null,$blurFactor=5);

This method came to Baidu. Someone who interviewed me asked me to do it, and Baidu got a lot of information to implement it.

The value of blurFactor represents the degree of blur

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