0
我有一個PHP
腳本,它連接到一個MySQL
數據庫,並應輸出一個HTML表格。我已經厭倦了設置一個長輪詢的AJAX腳本來每秒輪詢我的PHP
腳本。它似乎工作基於我可以在我的瀏覽器調試器中看到,但表中沒有顯示在頁面上。任何人都可以幫我找到我的代碼有什麼問題嗎?PHP表格不顯示
reocrd.php
<?php
header("Cache-Control: no-cache, must-revalidate");
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
flush();
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<body>
<?php
$servername = "localhost";
$username = "recorduser";
$password = "recorduser";
$database = "record";
// Create connection
$conn = mysqli_connect($servername, $username, $password, $database);
// Check connection
if (!$conn) {
die("Connection failed: " . mysqli_connect_error());
}
$sql = "SELECT * from username ORDER BY id DESC LIMIT 1";
$result = mysqli_query($conn, $sql);
echo "
<table border='1'>
<tr>
<th>Firstname</th>
<th>Lastname</th>
</tr>";
while($row = mysqli_fetch_array($result)){
echo "<tr>";
echo "<td>" . $row['name'] . "</td>";
echo "<td>" . $row['lastname'] . "</td>";
echo "</tr>";
echo "</table>";
}
mysqli_close($conn);
?>
</body>
</html>
test3.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Comet php backend</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<body>
<head>
<script type="text/javascript" src="http://code.jquery.com/jquery- 1.11.2.min.js"></script>
<script type="text/javascript" src="client1.js"></script>
</head>
<h1>Response from server:</h1>
</body>
</html>
client1.js
setInterval(function(){
$.ajax({
url : "record.php",
success : function(data){
//Update your dashboard gauge
salesGauge.setValue(data.value);
},
dataType : "json"
});
}, 30000);
因爲您嘗試將HTML塊添加到一個標準'value'屬性?無論如何,有'salesGauge'?爲什麼這些多頭?試試'success:function(data){$('body')。append(data)...'來代替。這將明顯測試PHP腳本是否返回某些內容。 – davidkonrad 2015-02-05 19:02:01
你的HTML代碼有些奇怪。爲什麼雙'
'標籤(在'body'標籤內)?另外,爲什麼在while循環內部放置'echo'「'?你正在關閉每一行的表格。 – 2015-02-05 19:15:28@davidkonrad您證明我的代碼不起作用。 'salesGauge'是什麼意思? – user3818265 2015-02-06 14:43:07