Simple case of PHP upload:

Html file:

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Style related:

On the mobile phone, click the upload button and the camera will pop up:

直接调用相机 　　　　　　　　　　　　调用相机 图片或者相册

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PHP file:

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A simple case of uploading using thinkphp upload class:

= 'maxSize' => 3145728, 'exts' => ('jpg', 'gif', 'png', 'jpeg'), 'rootPath' => './Public/Uploads/info/', 'savePath' => '', 'saveName' => ('uniqid',''), 'autoSub' => , 'subName' => ('date','Ymd'), upload(['result'] = 1['imgurl'] = ''['msg'] = '' = = ->upconfig['rootPath'] . ->upconfig['savePath'(!( = (, 0777, (! ['result'] = 0['msg'] = "创建保存图片的路径失败！" = \Think\Upload(->

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(! ['result'] = 0['msg'] = -> = ->upconfig['rootPath'] . ['savepath'].['savename' = ('./', '/', ['result'] = 1['imgurl'] = (0 = ->upload(['attorney']);

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Mobile app upload image example: API interface:

Question:When APP uploads avatars, how should php, as the API end, receive image information?

The upload part of the code is not a problem, the main problem is how the server side can receive the image information from the APP side. Under the B/S architecture, you can set enctype="multipart/form-data" directly through the form form, and the image information will be in the $_FILES array. So is this also true in C/S mode?

Answer 1 (see method 1):Generally, binary stream transmission is used. The client transmits binary data, the server receives it, and then file_put_contents is written to the file. That's it. The file name format and where to put the file are all defined by yourself.

Answer 2 (see method 2):The Android or IOS client simulates an HTTP Post request to the server, and the server receives the corresponding Post request (through $_FILES Obtain image resources) and return response information to the client. (This method is the same as the method of obtaining Html submission)

Method 1:Base64 encrypt the image into a string for transmission

Description: IOS or Android side: Base64 encode the image to obtain the string, and pass it to the interface

Interface side: Base64 decode the received string, and then upload it to the specified location through the file_put_contents function

/** * 图片上传 * @param $imginfo - 图片的资源，数组类型。['图片类型','图片大小','图片进行base64加密后的字符串'] * @param $companyid - 公司id * @return mixed */ public function uploadImage( $imginfo , $companyid ) { $image_type = strip_tags($imginfo[0]); //图片类型 $image_size = intval($imginfo[1]); //图片大小 $image_base64_content = strip_tags($imginfo[2]); //图片进行base64编码后的字符串 $upload = new UploaderService(); $upconfig = $upload->upconfig; if(($image_size > $upconfig['maxSize']) || ($image_size == 0)) { $array['status'] = 13; $array['comment'] = "图片大小不符合要求！"; return $array; } if(!in_array($image_type,$upconfig['exts'])) { $array['status'] = 14; $array['comment'] = "图片格式不符合要求！"; return $array; } // 设置附件上传子目录 $savePath = 'bus/group/' . $companyid . '/'; $upload->upconfig['savePath'] = $savePath; //图片保存的名称 $new_imgname = uniqid().mt_rand(100,999).'.'.$image_type; //base64解码后的图片字符串 $string_image_content = base64_decode($image_base64_content); // 保存上传的文件 $array = $upload->upload($string_image_content,$new_imgname); return $array; }

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// 上传配置信息 public $upconfig = array( 'maxSize' => 3145728, //3145728B（字节） = 3M 'exts' => array('jpg', 'gif', 'png', 'jpeg'),// 'rootPath' => './Public/Uploads/info/', 'rootPath' => 'https://www.eyuebus.com/Public/Uploads/info/', ); /** * @param $string_image_content - 所要上传图片的字符串资源 * @param $new_imgname - 图片的名称，如：57c14e197e2d1744.jpg * @return mixed */ public function upload($string_image_content,$new_imgname) { $res['result'] = 1; $res['imgurl'] = ''; $res['comment'] = ''; do { $ret = true; $fullPath = $this->upconfig['rootPath'] . $this->upconfig['savePath']; if(!file_exists($fullPath)){ $ret = mkdir($fullPath, 0777, true); } if(!$ret) { // 上传错误提示错误信息 $res['result'] = 12; $res['comment'] = "创建保存图片的路径失败！"; return $res; break; } //开始上传 if (file_put_contents($fullPath.$new_imgname, $string_image_content)){ // 上传成功 获取上传文件信息 $res['result'] = 0; $res['comment'] = "上传成功！"; $res['imgname'] = $new_imgname; }else { // 上传错误提示错误信息 $res['result'] = 11; $res['comment'] = "上传失败！"; } } while(0); return $res; }

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方式二：Android或者IOS客户端模拟一个HTTP的Post请求到服务器端，服务器端接收相应的Post请求后（通过$_FILES获取图片资源），返回响应信息给给客户端。（这一种方式和获取Html方式提交的方法一样）

移动端需要请求一个URL，这个URL接收POST过去的数据，比如：http://www.apixxx.net/Home/Uploader/uploadPrepare

public function uploadPrepare() { $array = array(); $post_log = print_r($_POST, true); Log::record($post_log, 'DEBUG'); $file_log = print_r($_FILES, true); Log::record($file_log, 'DEBUG'); $token = $_POST['token']; $token_str = jwt_decode($token);$user_type = $token_str['user_type']; // 设置附件上传子目录 if($user_type == 1) { $savePath = 'travel/group/' . $user_companyid . '/'; }elseif ($user_type == 2) { $savePath = 'bus/group/' . $user_companyid . '/'; }elseif ($user_type == 3) { $savePath = 'driver/group/' . $user_companyid . '/'; }else { $array['status'] = 3; $array['comment'] = '非法用户！'; return $array; } $this->upconfig['savePath'] = $savePath; // 保存上传的文件(单张) // $res = $this->upload($_FILES['file']); // 保存上传的文件（多张） 移动端的表单name=“xxx[]”，支持多张图片 $res = $this->upload(); $array['status'] = $res['status']; $array['comment'] = $res['comment']; $array['responseParameters']['img_url'] = $res['img_url']; echo json_encode($array); } protected function upload() { $res['status'] = 1; $res['imgurl'] = ''; $res['comment'] = ''; do { $ret = true; $fullPath = $this->upconfig['rootPath'] . $this->upconfig['savePath']; if(!file_exists($fullPath)){ $ret = mkdir($fullPath, 0777, true); } if(!$ret) { // 上传错误提示错误信息 $res['status'] = 1; $res['comment'] = "创建保存图片的路径失败！"; break; } // 实例化上传类 $upload = new \Think\Upload($this->upconfig);// // 上传单个文件 // $info = $upload->uploadOne($file); // 上传多个文件 $infos = $upload->upload(); // 上传的图片数量 $file_count = 0; foreach ($_FILES as $file_k => $file_v) { foreach ($file_v["size"] as $k => $v) { if($v == 0) { continue; } $file_count += 1; } } Log::record("info_log", 'DEBUG'); $info_log = print_r($infos,true); Log::record($info_log, 'DEBUG'); if(!$infos) { // 上传错误提示错误信息 $res['status'] = 2; $res['comment'] = $upload->getError(); } else { // 获取的上传成功的图片数量 $info_count = 0; // 上传成功 获取上传文件信息 foreach($infos as $k => $v) { $imgurl[$v['key']][] = str_replace('./', '/', $this->upconfig['rootPath'] . $v['savepath'].$v['savename']); $info_count += 1; } if($file_count != $info_count) { $res['status'] = 1; $res['comment'] = "上传失败！上传的多张图片，没有全部上传成功"; }else { $res['status'] = 0; $res['comment'] = "上传成功！"; $res['img_url'] = $imgurl; } } } while(0); return $res; }

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