PHP教程
<script type="text/javascript" src="http://res.wx.qq.com/open/js/jweixin-1.0.0.js"></script>
<script>
wx.config({
   debug: false, // 開啟調(diào)試模式,調(diào)用的所有api的返回值會在客戶端alert出來,若要查看傳入的參數(shù),可以在pc端打開,參數(shù)信息會通過log打出,僅在pc端時才會打印.
   appId: '{$appid}', // 必填,公眾號的唯一標識
   timestamp:{$timestamp} , // 必填,生成簽名的時間戳
   nonceStr: '{$nonceStr}', // 必填,生成簽名的隨機串
   signature: '{$signature}',// 必填,簽名,見附錄1
   jsApiList: ['onMenuShareAppMessage','onMenuShareTimeline'] // 必填,需要使用的JS接口列表,所有JS接口列表見附錄2
 });
 wx.ready(function(){
  //分享給朋友
  wx.onMenuShareAppMessage({
    title: {$title}, // 分享標題 此處$title可在控制器端傳遞也可在頁面?zhèn)鬟f 頁面?zhèn)鬟f講解在下面哦
    desc: {$desc}, //分享描述
    link: {$link}, // 分享鏈接
    imgUrl: {$imgurl}, // 分享圖標
    type: '', // 分享類型,music、video或link,不填默認為link
    dataUrl: '', // 如果type是music或video,則要提供數(shù)據(jù)鏈接,默認為空
    success: function () {
       alert('分享成功');
    },
    cancel: function () {
      // 用戶取消分享后執(zhí)行的回調(diào)函數(shù)
      // alert('取消分享');
    }
  });
  //分享到朋友圈
   wx.onMenuShareTimeline({
    title: {$title}, // 分享標題
    desc: {$desc}, // 分享描述
    link: {$link}, // 分享鏈接
    imgUrl: {$imgurl}, // 分享圖標
    success: function () {
      // 用戶確認分享后執(zhí)行的回調(diào)函數(shù)
    },
    cancel: function () {
      // 用戶取消分享后執(zhí)行的回調(diào)函數(shù)
    }
  });
 });
</script>

PHP教程
<?php
$jssdk = new \Home\Util\JSSDK(C('APPID'), C('SECRET'));//此處C里面的東西為你所使用的公眾號的appid和secret,這倆個東西可在微信公眾平臺獲取到 不詳細解釋 找不到追加評論(講解) JSSDK文件代碼在下
$signPackage = $jssdk->GetSignPackage();
$this->assign('appid',$signPackage["appId"]);
$this->assign('timestamp',$signPackage["timestamp"]);
$this->assign('nonceStr',$signPackage["nonceStr"]);
 $this->assign('signature',$signPackage["signature"]);

PHP教程
<?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 一定要動態(tài)獲取,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();
  // 這里參數(shù)的順序要按照 key 值 ASCII 碼升序排序
  $string = "jsapi_ticket=$jsapiTicket&noncestr=$nonceStr&timestamp=$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 應(yīng)該全局存儲與更新,以下代碼以寫入到文件中做示例
  $data = json_decode($this->get_php_file("jsapi_ticket.php"));
  if ($data->expire_time < time()) {
   $accessToken = $this->getAccessToken();  
   // 如果是企業(yè)號用以下 URL 獲取 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 應(yīng)該全局存儲與更新,以下代碼以寫入到文件中做示例
  $data = json_decode($this->get_php_file("access_token.php")); 
  if ($data->expire_time < time()) {
   // 如果是企業(yè)號用以下URL獲取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);
 }
 //獲取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($output, true);
 }
 //獲取ticket
 private function httpGet($url) {
  $curl = curl_init();
  curl_setopt($curl, CURLOPT_URL, $url);
  curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
  // curl_setopt($curl, CURLOPT_TIMEOUT, 500);
  // 為保證第三方服務(wù)器與微信服務(wù)器之間數(shù)據(jù)傳輸?shù)陌踩?所有微信接口采用https方式調(diào)用,必須使用下面2行代碼打開ssl安全校驗.
  // 如果在部署過程中代碼在此處驗證失敗,請到 http://curl.haxx.se/ca/cacert.pem 下載新的證書判別文件.
  curl_setopt($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);
 }
}