How to achieve Gaussian blur in pictures in PHP

In PHP, the Gaussian algorithm can be used to blur the image. The statement to implement it is "function gaussian_blur($srcImg,$savepath=null...$blurFactor=3){...}", where The value of blurFactor represents the degree of blur.

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

The example of this article describes the use of Gaussian algorithm in PHP to realize the image processing Blur function. I would like to share it with you for your reference. The details are as follows:

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 ($srcinfo[2]) { case1: imagegif($srcImgObj, $savefile); break; case2: imagejpeg($srcImgObj, $savefile); break; case3: imagepng($srcImgObj, $savefile); break; default: return'保存失败'; //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 was found on Baidu. Someone who interviewed me asked me to do it, and I needed a lot of information from Baidu to implement it.

The value of blurFactor represents the degree of blur

Effect display:

Original image:

Blurry degree 2

Blurry level 3

Blurry level 4

Blurry Level 5

Blurry Level 6

Blurry Level 7

Recommended learning: "PHP Video Tutorial"

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