原生php 实现微信自定义分享

 
不依赖任何框架,原生php 实现微信自定义分享:
 
只需要两个文件:
 
  1. index.php //模板文件
  2. jssdk.php

 
index.php (模板代码如下):
 
自行替换 appId 和 appSecret
 
<?php 

include_once 'jssdk.php';
$jssdk = new \JSSDK("appId", "appSecret");
$signPackage = $jssdk->GetSignPackage();

$appid = 'appId';
$timestamp = $signPackage['timestamp'];
$nonceStr = $signPackage['nonceStr'];
$signature = $signPackage['signature'];

?>



<script src="http://res.wx.qq.com/open/js/jweixin-1.0.0.js"></script>
<script>
wx.config({
appId: '<?php echo $appid;?>',
timestamp: '<?php echo $timestamp;?>',
nonceStr: '<?php echo $nonceStr;?>',
signature: '<?php echo $signature;?>',
jsApiList: [
'onMenuShareTimeline',
'onMenuShareAppMessage'
]
});
wx.ready(function () {
shareWeixin();
});
function shareWeixin(){
wx.onMenuShareTimeline({
title: '标题',
link: '分享地址',
imgUrl: '分享图片地址',
success: function () {
// 用户确认分享后执行的回调函数
//window.location.href="";
},
cancel: function () {
// 用户取消分享后执行的回调函数
}
});
wx.onMenuShareAppMessage({
title: '标题',
desc: '简介',
link: '分享地址',
imgUrl: '分享图片地址',
type: '',
dataUrl: '',
success: function () {
// 用户确认分享后执行的回调函数
//window.location.href="";
},
cancel: function () {
// 用户取消分享后执行的回调函数
}
});
}


</script>

jssdk.php 代码如下:
 
<?php
class JSSDK {
private $appId;
private $appSecret;

public function __construct($appId, $appSecret) {
$this->appId = $appId;
$this->appSecret = $appSecret;
}

public function getSignPackage() {
$jsapiTicket = $this->getJsApiTicket();
$url = "http://www.51ask.org/";
$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
$data = json_decode(file_get_contents("jsapi_ticket.json"));
if ($data->expire_time < time()) {
$accessToken = $this->getAccessToken();
$url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$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;
}

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
$data = json_decode(file_get_contents("access_token.json"));
if ($data->expire_time < time()) {
$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$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;
}

private function httpGet($url) {
$curl = curl_init();
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_TIMEOUT, 500);
curl_setopt($curl, CURLOPT_URL, $url);

$res = curl_exec($curl);
curl_close($curl);

return $res;
}
}

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