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
<?php
class 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()
{
}
}