Kindeditor editor upload image ultra wide automatic compression -php code

kindeditor It's an open source editor , stay web Website editing is widely used , The built-in editor code can only limit the size , You can't limit the width and height of the picture , Sometimes the picture is too wide and very ugly , This article introduces kindeditor The editor uploads pictures with ultra wide automatic compression , Proportional compression , Directly reduce the size of the picture , Save a space , Speed up image loading .

Find the following file and open ,kindeditor\php\upload_json.php

Find this line of code ：
$file_url = $save_url . $new_file_name;

Add the following code after ：

 compressedImage($_SERVER['DOCUMENT_ROOT'].$file_url,800);// The compressed image

The code above , You can also set the compression quality , See the following functions for specific functions

Then at the bottom of the file , Add the following 2 A function

/**
     * desription  Proportionally compressed picture   author wfuyu.com
     * @param sting $imgsrc  Picture path 
     * @param string $imgdst  Save path after compression , If it is empty , Coverage 
	 ,$zhiliang=90   Picture quality 
	 $wd= If it exceeds this size, it will be compressed proportionally 
     */
     function compressedImage($imgsrc,$wd=600,$zhiliang=90,$imgdst=''){
		 if($imgdst==''){$imgdst=$imgsrc;}
        list($width, $height, $type) = getimagesize($imgsrc);
        $new_width = $width;// The compressed picture is wide 
        $new_height = $height;// The compressed picture is high 
 
        if($width >= $wd){
            $per = $wd / $width;// Calculation scale 
            $new_width = $width * $per;
            $new_height = $height * $per;
        }

        switch ($type) {
            case 1:
                $giftype = check_gifcartoon($imgsrc);
                if ($giftype) {
                  //  header('Content-Type:image/gif');
                    $image_wp = imagecreatetruecolor($new_width, $new_height);
                    $image = imagecreatefromgif($imgsrc);
					$bg =imagecolorallocate($image_wp, 255, 255, 255);
				    imagefill($image_wp, 0, 0, $bg);
                    imagecopyresampled($image_wp, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
                    //90 It represents quality 、 Compressed picture size 
                    imagejpeg($image_wp, $imgdst, $zhiliang);
                    imagedestroy($image_wp);
                    imagedestroy($image);
                }
                break;
            case 2:
               // header('Content-Type:image/jpeg');
                $image_wp = imagecreatetruecolor($new_width, $new_height);
                $image = imagecreatefromjpeg($imgsrc);
                imagecopyresampled($image_wp, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
			
                //90 It represents quality 、 Compressed picture size 
                imagejpeg($image_wp, $imgdst, $zhiliang);
                imagedestroy($image_wp);
                imagedestroy($image);
                break;
            case 3:
                //header('Content-Type:image/png');
				$image_wp = imagecreatetruecolor($new_width, $new_height);
                $image = imagecreatefrompng($imgsrc);
				$bg =imagecolorallocate($image_wp, 255, 255, 255);
				imagefill($image_wp, 0, 0, $bg);
                imagecopyresampled($image_wp, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
                //90 It represents quality 、 Compressed picture size 
                imagejpeg($image_wp, $imgdst, $zhiliang);
                imagedestroy($image_wp);
                imagedestroy($image);
                break;
				  
		
        }
    }
	
function check_gifcartoon($image_file){ $fp = fopen($image_file,'rb');$image_head = fread($fp,1024);fclose($fp);return preg_match("/".chr(0x21).chr(0xff).chr(0x0b).'NETSCAPE2.0'."/",$image_head)?false:true;}