PHP implements WeChat sharing circle of friends

This article mainly introduces the PHP implementation of WeChat sharing circle of friends demo source code. Interested friends can refer to it.

1. First load the interface code that comes with WeChat

<?php 
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[&#39;HTTPS&#39;]) && $_SERVER[&#39;HTTPS&#39;] !== &#39;off&#39; || $_SERVER[&#39;SERVER_PORT&#39;] == 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=$nonceStr&timestamp=$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; 
  } 
 
  private 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"; 
      $url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$accessToken"; 
      $res = json_decode($this->httpGet($url)); 
      $ticket = $res->ticket; 
      if ($ticket) { 
        $data->expire_time = time() + 7000; 
        $data->jsapi_ticket = $ticket; 
        $this->set_php_file("jsapi_ticket.php", json_encode($data)); 
      } 
    } else { 
      $ticket = $data->jsapi_ticket; 
    } 
 
    return $ticket; 
  } 
 
  private 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"; 
      $res = json_decode($this->httpGet($url)); 
      $access_token = $res->access_token; 
      if ($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; 
  } 
 
  private 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; 
  } 
 
  private function get_php_file($filename) { 
    return trim(substr(file_get_contents($filename), 15)); 
  } 
  private function set_php_file($filename, $content) { 
    $fp = fopen($filename, "w"); 
    fwrite($fp, "<?php exit();?>" . $content); 
    fclose($fp); 
  } 
}

2. Modify your own preparation information and open it with WeChat browser

<?php 
require_once "jssdk.php"; 
$appid = &#39;wx110&#39;; 
$APPSECRET = &#39;110&#39;; 
$jssdk = new JSSDK($appid, $APPSECRET); 
$signPackage = $jssdk->GetSignPackage(); 
?> 
 
<!DOCTYPE html> 
<html lang="en"> 
    <head> 
        <meta charset="UTF-8"> 
        <title>js微信自定义分享标题、链接和图标</title> 
         <meta name="keywords" content="js微信分享,php微信分享" /> 
        <meta name="description" content="PHP自定义微信分享内容，包括标题、图标、链接等，分享成功和取消有js回调函数。" /> 
    </head> 
    <body> 
 
    </body> 
    <script src="http://res.wx.qq.com/open/js/jweixin-1.0.0.js"></script> 
    <script> 
        /* 
         * 注意： 
         * 1. 所有的JS接口只能在公众号绑定的域名下调用，公众号开发者需要先登录微信公众平台进入“公众号设置”的“功能设置”里填写“JS接口安全域名”。 
         * 2. 如果发现在 Android 不能分享自定义内容，请到官网下载最新的包覆盖安装，Android 自定义分享接口需升级至 6.0.2.58 版本及以上。 
         * 3. 常见问题及完整 JS-SDK 文档地址：http://mp.weixin.qq.com/wiki/7/aaa137b55fb2e0456bf8dd9148dd613f.html 
         * 
         * 开发中遇到问题详见文档“附录5-常见错误及解决办法”解决，如仍未能解决可通过以下渠道反馈： 
         * 邮箱地址：weixin-open@qq.com 
         * 邮件主题：【微信JS-SDK反馈】具体问题 
         * 邮件内容说明：用简明的语言描述问题所在，并交代清楚遇到该问题的场景，可附上截屏图片，微信团队会尽快处理你的反馈。 
         */ 
        wx.config({ 
            debug: false, 
            appId: &#39;<?php echo $appid; ?>&#39;, 
            timestamp: <?php echo $signPackage["timestamp"]; ?>, 
            nonceStr: &#39;<?php echo $signPackage["nonceStr"]; ?>&#39;, 
            signature: &#39;<?php echo $signPackage["signature"]; ?>&#39;, 
            jsApiList: [ 
               &#39;onMenuShareTimeline&#39; 
            ] 
        }); 
        wx.ready(function() { 
            wx.onMenuShareTimeline({ 
                title: &#39;二当家的&#39;, // 分享标题 
                link: &#39;http://www.erdangjiade.com/&#39;, // 分享链接 
                imgUrl: &#39;&#39;, // 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> 
    <p style="text-align: center;color:red;font-size:20px;margin-top: 120px">请用微信浏览器打开，并打开右上方按钮。分享到朋友圈试试。</p> 
</html>

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