CI Upload image

o_upload.php

<?php/** * Created by Phpstorm.    * User:brady * DATE:2018/3/15 * time:14:10 */class o_upload extends my_model{protected $table = ';    Public Function __construct () {parent::__construct (); }/** * @param $dir picture path to upload below, for example, before and after admin do not/* @param $base 64_img base64 bit picture * @param int $widt         H thumbnail image * @return String * @throws Exception */Public Function do_upload ($dir, $base 64_img, $width =300) { $up _dir = './upload/'. $dir. "        /";///stored in the current directory under the Upload folder if (!file_exists ($up _dir)) {mkdir ($up _dir,0777);            } if (Preg_match ('/^ (data:\s*image\/(\w+); base64,)/', $base 64_img, $result)) {$type = $result [2]; if (In_array ($type, Array (' pjpeg ', ' jpeg ', ' jpg ', ' gif ', ' BMP ', ' png '))) {$new _file = $up _dir.date (' Ymdhis_ ') . rand (1000,9999). '. '.                $type;  if (file_put_contents ($new _file, Base64_decode (Str_replace ($result [1], ", $base 64_img)))) {$last _file = $This->resize_img ($new _file, $width);                    Unlink ($new _file);                    $img _path = substr ($last _file,1);                return $img _path;                }else{throw new Exception ("image upload failed");            }}else{//File type error throw new Exception (' Image upload type error ');        }}else{//File Error throw new Exception ("File Error");        }} Public Function resize_img ($file, $size) {$config [' image_library '] = ' gd2 ';        $config [' source_image '] = $file;        $config [' create_thumb '] = TRUE;        $config [' thumb_marker '] = "_". $size;        $config [' maintain_ratio '] = TRUE;        $config [' width '] = $size;        $this->load->library (' Image_lib ', $config);        $this->image_lib->resize ();        if (! $this->image_lib->resize ()) {throw new Exception ($this->image_lib->display_errors ()); } else {$type = PathInfo ($file, pathinfo_extension);            $len = strlen ($type) + 1;            $last _file = substr ($file, 0,-$len); return $last _file. " _ ". $size.".        $type; }    }}

image.php

<?phpclass Images extends my_controller{public    function __construct ()    {        parent::__construct ();    }    Public function upload ()    {        $this->load->model ("O_upload");        try{            $img _path = $this->o_upload->do_upload (' article_list ');            $this->success_response ("Upload success");        } catch (Exception $e) {            $this->error_response ($e->getmessage ());        }    }    /**     * Upload Avatar     *    /Public Function upload_face ()    {    }}

CI Upload image