PHP微信分享功能开发（附代码）

<script type="text/javascript" src="http://res.wx.qq.com/open/js/jweixin-1.0.0.js"></script>
 
<script>
wx.config({
   debug: false, // 开启调试模式,调用的所有api的返回值会在客户端alert出来，若要查看传入的参数，可以在pc端打开，参数信息会通过log打出，仅在pc端时才会打印。
   appId: '{$appid}', // 必填，公众号的唯一标识
   timestamp:{$timestamp} , // 必填，生成签名的时间戳
   nonceStr: '{$nonceStr}', // 必填，生成签名的随机串
   signature: '{$signature}',// 必填，签名，见附录1
   jsApiList: ['onMenuShareAppMessage','onMenuShareTimeline'] // 必填，需要使用的JS接口列表，所有JS接口列表见附录2
 });
 
 wx.ready(function(){
  //分享给朋友
  wx.onMenuShareAppMessage({
    title: {$title}, // 分享标题 此处$title可在控制器端传递也可在页面传递 页面传递讲解在下面哦
    desc: {$desc}, //分享描述
    link: {$link}, // 分享链接
    imgUrl: {$imgurl}, // 分享图标
    type: '', // 分享类型,music、video或link，不填默认为link
    dataUrl: '', // 如果type是music或video，则要提供数据链接，默认为空
    success: function () {
       alert('分享成功');
    },
    cancel: function () {
      // 用户取消分享后执行的回调函数
      // alert('取消分享');
    }
  });
  //分享到朋友圈
   wx.onMenuShareTimeline({
    title: {$title}, // 分享标题
    desc: {$desc}, // 分享描述
    link: {$link}, // 分享链接
    imgUrl: {$imgurl}, // 分享图标
    success: function () {
      // 用户确认分享后执行的回调函数
    },
    cancel: function () {
      // 用户取消分享后执行的回调函数
    }
  });
 });
 
</script>

<？php
 
$jssdk = new \Home\Util\JSSDK(C('APPID'), C('SECRET'));//此处C里面的东西为你所使用的公众号的appid和secret，这俩个东西可在微信公众平台获取到 不详细解释 找不到追加评论（讲解） JSSDK文件代码在下
$signPackage = $jssdk->GetSignPackage();
 
$this->assign('appid',$signPackage["appId"]);
$this->assign('timestamp',$signPackage["timestamp"]);
$this->assign('nonceStr',$signPackage["nonceStr"]);
 $this->assign('signature',$signPackage["signature"]);

<?php
namespace Home\Util;
use Think\Controller;
class JSSDK{
 private $appId;
 private $appSecret;
 public function __construct($appId, $appSecret) {
  $this->appId = $appId;
  $this->appSecret = $appSecret;
 }
 public function getSignPackage() {
  $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
  );
  return $signPackage;
 }
 private function createNonceStr($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
  $data = json_decode($this->get_php_file("jsapi_ticket.php"));
  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";
   $url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=$accessToken&type=jsapi";
   $res = json_decode($this->httpGet($url));
   $ticket = $res->ticket;
   // var_dump($url);
   if ($ticket) {
    $data->expire_time = time() + 7000;
    $data->jsapi_ticket = $ticket;
    $this->set_php_file("jsapi_ticket.php", json_encode($data));
   }
  } 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
  $data = json_decode($this->get_php_file("access_token.php")); 
  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 = $this->getJson($url);
   $access_token = $res['access_token'];
   // var_dump($res);
   if ($access_token) {
    $data->expire_time = time() + 7000;
    $data->access_token = $access_token;
    $this->set_php_file("access_token.php", json_encode($data));
   }
  } else {
   $access_token = $data->access_token;
  }
  return $access_token;
  // $aa = $access_token;
  // var_dump($aa);
 }
 //获取access_token
 public function getJson($url){
   $ch = curl_init();
   curl_setopt($ch, CURLOPT_URL, $url);
   curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
   curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
   curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
   $output = curl_exec($ch);
   curl_close($ch);
   // var_dump(json_decode($output, true));
   return json_decode($output, true);
 }
 //获取ticket
 private function httpGet($url) {
  $curl = curl_init();
  curl_setopt($curl, CURLOPT_URL, $url);
  curl_setopt($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, FALSE);
  curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
  $res = curl_exec($curl);
  // var_dump($res);
  curl_close($curl);  
  return $res;
 }
 private function get_php_file($filename) {
  return trim(substr(file_get_contents($filename), 15));
  // echo trim(substr(file_get_contents($filename), 15));die;
  // $aa = trim(substr(file_get_contents($filename), 15));
 }
 private function set_php_file($filename, $content) {
  $fp = fopen($filename, "w");
  fwrite($fp, "<?php exit();?>" . $content);
  fclose($fp);
 }
}