这篇文章主要介绍了PHP处理微信SDK截取照片上传，有着一定的参考价值，现在分享给大家，有需要的朋友可以参考一下
PHP端处理TP3.2框架
一：类名：
namespace Home\Controller;
use Think\Controller;
use app\common\Curl;
class ParentController extends Controller
{
public function __construct(){
parent::__construct();
$this->appId = '你的appid';
$this->appSecret = '你的appSecret';
$openid = session('openid');
// session("openid",'ogC7U1XRM3ZOqjLZ99O2coJjYsrU');
if(!$openid){
$this->get_openid();
}
}二：方法：
给客户端返回必要微信参数：
/**
* 给客户端返回必要微信参数
* @Author TGHan
* @DateTime 2018-04-26
* @return [type] [description]
*/
public function modifyinfor() {
$jsapiTicket = $this->getJsApiTicket();
// 注意 URL 一定要动态获取，不能 hardcode.
$protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
$url = "$protocol$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
$timestamp = time();
$nonceStr = $this->createNonceStr();
// 这里参数的顺序要按照 key 值 ASCII 码升序排序
$string = "jsapi_ticket=$jsapiTicket&noncestr=$nonceStr×tamp=$timestamp&url=$url";
$signature = sha1($string);
$signPackage = array(
"appId" => $this->appId,
"nonceStr" => $nonceStr,
"timestamp" => $timestamp,
"url" => $url,
"signature" => $signature,
"rawString" => $string
);
$this->assign('signPackage',$signPackage);
$this->display();
}
public function createNonceStr($length = 16) {
$chars ="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
$str = "";
for ($i = 0; $i < $length; $i++) {
$str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
}
return $str;
}
public function getJsApiTicket() {
// jsapi_ticket 应该全局存储与更新，以下代码以写入到文件中做示例
$data =json_decode(file_get_contents("jsapi_ticket.json"));
if ($data->expire_time < time()) {
$accessToken = $this->getAccessToken();
// 如果是企业号用以下 URL 获取 ticket
// $url = "https://qyapi.weixin.qq.com/cgi-bin/get_jsapi_ticket?access_token=$accessToken";
$url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$accessToken";
$res = json_decode($this->httpGet($url));
$ticket = $res->ticket;
if ($ticket) {
$data->expire_time = time() + 7000;
$data->jsapi_ticket = $ticket;
$fp = fopen("jsapi_ticket.json", "w");
fwrite($fp, json_encode($data));
fclose($fp);
}
} else {
$ticket = $data->jsapi_ticket;
}
return $ticket;
}
public function getAccessToken() {
// access_token 应该全局存储与更新，以下代码以写入到文件中做示例
$data =json_decode(file_get_contents("access_token.json"));
if ($data->expire_time < time()) {
// 如果是企业号用以下URL获取access_token
// $url = "https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=$this->appId&corpsecret=$this->appSecret";
$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$this->appId&secret=$this->appSecret";
$res = json_decode($this->httpGet($url));
$access_token = $res->access_token;
if ($access_token) {
$data->expire_time = time() + 7000;
$data->access_token = $access_token;
$fp = fopen("access_token.json", "w");
fwrite($fp, json_encode($data));
fclose($fp);
}
} else {
$access_token = $data->access_token;
}
return $access_token;
}
public function httpGet($url) {
$curl = curl_init();
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_TIMEOUT, 500);
// 为保证第三方服务器与微信服务器之间数据传输的安全性，所有微信接口采用https方式调用，必须使用下面2行代码打开ssl安全校验。
// 如果在部署过程中代码在此处验证失败，请到 http://curl.haxx.se/ca/cacert.pem 下载新的证书判别文件。
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, true);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, true);
curl_setopt($curl, CURLOPT_URL, $url);
$res = curl_exec($curl);
curl_close($curl);
return $res;
}三：方法：
图片上传
立即学习“PHP免费学习笔记（深入）”；
1，定义文件路径，写入图片流
2，从微信服务器获取图片流
3，图片上传，给客户端返回图片路径
/*图片
* 获取media_id
*/
public function upload_head(){
if(IS_POST){
$serverId = I('post.media_id');
if(!empty($serverId)){
$news_file = $this->doWechatPic( $serverId );
$this->ajaxReturn(array("is_success"=>"success","msg"=>"上传成功","url"=>$news_file));
}else{
$this->ajaxReturn(array("is_success"=>"error","msg"=>"上传失败1"));
}
}
}
/*
* 从微信服务器获取图片流
*/
public function doWechatPic($serverId){//media_id=jlJs_iQIOA-TKLuhk4nCdPEdXnJ6paIeToO8vr-WUGvz05-6i5n498EzI232xSxn
$media_id = $serverId;//提交过来的serverId即$media_id
$access_token = $this->getAccessToken();
$pic_url = "http://file.api.weixin.qq.com/cgi-bin/media/get?access_token={$access_token}&media_id={$media_id}";
$filebody = file_get_contents($pic_url);//通过接口获取图片流
$filename = date("Ymd").'_'.uniqid().'.jpg';//定义图片名字及格式
return $this->saveFile($filename, $filebody);
}
/*
* 定义文件路径，写入图片流
*/
public function saveFile($filename, $filecontent){
$upload_dir = "./Public/static/images/headers";//保存路径，以时间作目录分层
$mkpath = $upload_dir;
if(!is_dir($mkpath)){
if(!mkdir($mkpath)){
die('no mkdir power');
}
if(!chmod($mkpath,0755)){//若服务器在阿里云上不建议使用0644
die('no chmod power');
}
}
$savepath = $upload_dir.'/'.$filename;
if(file_put_contents($savepath, $filecontent)){//写入图片流生成图片
$news_file = substr($savepath,1);
return $news_file;//返回图片路径
}else{
die('save failed');
}
}四：图片上传后，客户端将图片路径返回，插入数据库
public function save_child(){
$openid = session("openid");
$class_tid = session("class_tid");
if(IS_POST){
$data = array();
$data['cd_head'] = I('post.cd_head') ? I('post.cd_head') : '';
$data['cd_name'] = I('post.cd_name') ? I('post.cd_name') : '';
$data['cd_birthday'] = I('post.cd_birthday') ? I('post.cd_birthday') : '';
$data['cd_sex'] = I('post.cd_sex') ? I('post.cd_sex') : '';
$editData = M("parent_child")->where("class_tid='{$class_tid}' and wx_openid='{$openid}'")->save($data);
if($editData !== false){
$this->ajaxReturn(array("is_success"=>"success","msg"=>"修改成功"));
}else{
$this->ajaxReturn(array("is_success"=>"error","msg"=>"修改失败"));
}
}
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