微信内部分享网页 自定义 分享标题，文案，图片（php快速版）

1、“公众号设置”的功能设置里面填写js接口安全域名，ip不可以。（微信开发不熟的可以阅读下微信文档）

2、引入js   https://res.wx.qq.com/open/js/jweixin-1.0.0.js

3、调用js  方法（需要各种参数可接口获得，快速版直接php插入）

以下是所需代码

index.php（当前页面引用）

wx_share.php（封装php获取签名以及其他参数）

getSignPackage();
?>

wx_js_sdk.php（后台处理信息  类）

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;
	}

	private function getJsApiTicket()
	{
		$key = "JSAPI_TICKET";
		$mdata = M::Get($key);
		if ($mdata)
		//if(0)
		{
			return $mdata['ticket'];
		} else {
			$accessToken = $this->getAccessToken();
			$url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$accessToken";
			$res = json_decode($this->httpGet($url), true);
			if ($res) {
				M::Set($key, $res, 7000);
				$this->doSpecialMem($res['ticket'], 1, 7000);
				return $res['ticket'];
			}
		}
	}

	private function getAccessToken()
	{
		return $this->httpGet('http://*****/get_access_token.php?from=****');
	}

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

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

		return $res;
	}

	private function doSpecialMem($value = "", $type, $expire = 7200)
	{
		$key = "d****f4"; //秘钥
		$url = "http://****spl_mem.php";

		$data = array(
			"value" => $value,
			"type" => $type,
			"code" => md5($value . ',' . $key),
			"expire" => $expire
		);

		return $this->httpGet($url . '?' . http_build_query($data));
	}
}