# index.php頁面內重點
## 1、 獲取支付狀態：判斷是否支付成功的狀態status = success
~~~
<?php
$status = '';
if (isset($_GET['status']) && !empty($_GET['status'])) {
$status = $_GET['status'];
}
?>
~~~
## 2、頁面實現websocket
~~~
var wsServer = 'ws://192.168.33.10:9504';//ip+端口
var websocket = new WebSocket(wsServer);
websocket.onopen = function (client) {
websocket.send("<?php echo $status?>");//向后端發送是否成功購買的狀態
};
websocket.onmessage = function (client) {
//接收后端發送過來的數據【已經被購買過數據】
if (client.data) {
var data = JSON.parse(client.data);
sc.get(data).status('unavailable');
}
};
websocket.onclose = function (client) {
//是否斷開連接
console.log("Disconnected");
};
websocket.onerror = function (client, e) {
//錯誤信息
console.log('Error occured: ' + client.data);
};
~~~
