微信分享缩略图

$(document).ready(function(e) {
    var urll = location.href.split('#')[0];
    $.ajax({
        async:false,
        url:"php/fenxiang.php",
        data:{urll:urll},
        type:"POST",
        dataType:"json",
        success: function(ress){
            //console.log(ress);//查看返回结果
            
            //执行JS_SDK
            wx.config({
                debug: false,
                appId: ress.appid,
                timestamp: ress.timestamp,
                nonceStr: ress.nonceStr,
                signature: ress.signature,
                jsApiList: ['onMenuShareTimeline','onMenuShareAppMessage']
            });
            
            wx.ready(function () {
                wx.onMenuShareTimeline({
                    link: urll, // 分享链接，该链接域名或路径必须与当前页面对应的公众号JS安全域名一致
                    imgUrl:"http://m.highshang.net/imgs/highshang.jpg", // 分享图标
                    success: function () {
                        layer.msg('分享成功');
                    },
                    cancel: function () {
                        layer.msg('您取消了分享');
                    }
                });
                wx.onMenuShareAppMessage({
                    link: urll, // 分享链接，该链接域名或路径必须与当前页面对应的公众号JS安全域名一致
                    imgUrl: "http://m.highshang.net/imgs/highshang.jpg", // 分享图标
                    type: 'link', // 分享类型,music、video或link，不填默认为link
                    success: function () {
                        layer.msg('分享成功');
                    },
                    cancel: function () {
                        layer.msg('您取消了分享');
                    }
                });
            });

        }
    })    
});
//alert(location.href.split('#')[0]); //弹出的url必须与访问地址一致

<?php
date_default_timezone_set("PRC");
//微信
$url = $_POST['urll'];//获取当前页面的url，接收请求参数
$root['url'] = $url;
//获取access_token，并缓存
$token_file = fopen("token.txt", "r");
$rs = fgets($token_file);
fclose($token_file);
$attr = explode(',',$rs);
$time2 = time();
$token = $attr[0];
if(intval($time2)-intval($attr[1])>7000) {
    $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=wxb59cf3f3811db282&secret=bef9f19a79b93030b9552d0407354e19";
    $curl = curl_init(); 
    curl_setopt($curl, CURLOPT_URL, $url); 
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE); 
    curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE); 
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); 
    $output = curl_exec($curl); 
    $output = json_decode($output, true);
    $token_file = fopen("token.txt","w");//打开token.txt文件
    fwrite($token_file,$output['access_token'].','.time());//重写tken.txt全部内容
    fclose($token_file);//关闭文件流
    curl_close($curl);     
    $token = $output['access_token'];
}

//获取jsapi_ticket，并缓存
$jsapi_ticket = fopen("jsapi_ticket.txt", "r");
$rs2 = fgets($jsapi_ticket);
fclose($jsapi_ticket);
$attr2 = explode(',',$rs2);
$time3 = time();
$jssdk = $attr2[0];
if(intval($time3)-intval($attr2[1])>7000) {
    $ur = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=$token&type=jsapi";
    $res = file_get_contents($ur);
    $res = json_decode($res, true);
    $jssdk = $res['ticket'];
    $token_file2 = fopen("jsapi_ticket.txt","w");//打开token.txt文件
    fwrite($token_file2,$jssdk.','.time());//重写tken.txt全部内容
    fclose($token_file2);//关闭文件流     
}

$timestamp = time();//生成签名的时间戳
$metas = range(0, 9);
$metas = array_merge($metas, range('A', 'Z'));
$metas = array_merge($metas, range('a', 'z'));
$nonceStr = '';
for ($i=0; $i < 16; $i++) {
$nonceStr .= $metas[rand(0, count($metas)-1)];//生成签名的随机串
}

$string1="jsapi_ticket=".$jssdk."&noncestr=$nonceStr"."&timestamp=$timestamp"."&url=$url";
$signature=sha1($string1);
$root['appid'] = 'wxb59cf3f3811db282';
$root['nonceStr'] = $nonceStr;
$root['timestamp'] = $timestamp;
$root['signature'] = $signature;


echo json_encode($root);

?>