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 图片路径,以upload下面为准 ?比如 admin ?前后都不要 / ????* @param $base64_img ?base64位的图片 ????* @param int $width ?缩略图片 ????* @return string ????* @throws Exception ????*/ ???public function do_upload($dir,$base64_img,$width=300) ???{ ???????$up_dir = ‘./upload/‘.$dir."/";//存放在当前目录的upload文件夹下 ???????if(!file_exists($up_dir)){ ???????????mkdir($up_dir,0777); ???????} ???????if(preg_match(‘/^(data:\s*image\/(\w+);base64,)/‘, $base64_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], ‘‘, $base64_img)))){ ???????????????????$last_file = $this->resize_img($new_file,$width); ???????????????????unlink($new_file); ???????????????????$img_path = substr($last_file,1); ???????????????????return $img_path; ???????????????}else{ ???????????????????throw new Exception("图片上传失败"); ???????????????} ???????????}else{ ???????????????//文件类型错误 ???????????????throw new Exception(‘图片上传类型错误‘); ???????????} ???????}else{ ???????????//文件错误 ???????????throw new Exception("文件错误"); ???????} ???} ???public function resize_img($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("上传成功"); ???????}catch(Exception $e){ ???????????$this->error_response($e->getMessage()); ???????} ???} ???/** ????* 上传头像 ????*/ ???public function upload_face() ???{ ???}}ci上传图片
原文地址：https://www.cnblogs.com/php-linux/p/9058604.html