我有两个文件php(gettable.php和index.php)索引文件显示gettable.php获得的结果每隔一个,我想在索引中动态更新我的表的内容(只有新的或改变的值必须改变) 使用 ajax,我是 ajax 的初学者。
请帮帮我谢谢
可获取的.php
    //
    //
    // I load data from the server(xml file) 
    $xml = simplexml_load_string($result);
    foreach($xml as $node)
    {
        $name = "";
        $value = -1;
        foreach($node->attributes() as $a => $b) {
            if($a == "name")
            {
                $name = (string)$b;
    }
    else if($a == "value")
    {
        $value = (string)$b;
    }
        }
        $vars[$name] = $value;
    }
    ?>
    <table border="1">
    <tr>
    <th>id</th>
    <th>abc</th>
    <th>def</th>
    </tr>
    <tr>
    <td><?php
    echo "<p>x: ".$vars["x"]."</p>";
    ?>
    </td>
    <td><?php
    echo "<p>y: ".$vars["y"]."</p>";
    ?>
    </td>
    <td><?php
    echo "<p>z: ".$vars[z"]."</p>";
    ?>
    </td>
    </tr>
    </table> 
文件 index.php
    <html>  
<head>
    <title></title>
    <link rel="stylesheet" type="text/css" href="style.css" />
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.0/jquery.min.js"></script>
    <script language="JavaScript">
    $('#data').load("gettable.php");
    setInterval( "SANAjax();", 1000 ); 
    $(function() {
        SANAjax = function(){
        $('#data').load("gettable.php");
        }
    });
</script>
</head>
<body>
    <div id="data">
        <?php include_once('gettable.php'); ?>
    </div>
</body>