【发布时间】:2014-11-03 11:46:37
【问题描述】:
我希望能够使用单选按钮的返回值编写一些 mysql 查询。这是我的代码
<html>
<head>
<script>
function showUser(str) {
if (str=="") {
document.getElementById("txtHint").innerHTML="";
return;
}
if (window.XMLHttpRequest) {
// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
} else { // code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function() {
if (xmlhttp.readyState==4 && xmlhttp.status==200) {
document.getElementById("txtHint").innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET","getuser.php?q="+str,true);
xmlhttp.send();
}
</script>
</head>
<body>
<?php include 'db_connector.php';
$result = mysqli_query($con,"SELECT * FROM os_scope");
while($row = mysqli_fetch_array($result)) {
$row['name'];
echo "<li><div class='toggle-btn-grp cssonly'>
<div><form><input type='radio' name='os' value=".$row['name']." id='myRadio' onchange='showUser(this.value)'>
<label class='toggle-btn'><div class='title'>".$row['name']."</form></div></label></div></div></li>";
}
?>
<br>
<div id="txtHint"><b>Person info will be listed here.</b></div>
</body>
</html>
这是我的 php 文件 getuser.php
<?php
$q = intval($_GET['q']);
$con = mysqli_connect('localhost','root','abc123','mydb');
if (!$con) {
die('Could not connect: ' . mysqli_error($con));
}
mysqli_select_db($con,"ajax_demo");
$sql="SELECT * FROM os ";
$result = mysqli_query($con,$sql);
echo "<table border='1'>
<tr>
<th>ID</th>
<th>Name</th>
<th>Scope</th>
<th>Client</th>
<th>Supplier</th>
</tr>";
while($row = mysqli_fetch_array($result)) {
echo "<tr>";
echo "<td>" . $row['id'] . "</td>";
echo "<td>" . $row['name'] . "</td>";
echo "<td>" . $row['scope'] . "</td>";
echo "<td>" . $row['client'] . "</td>";
echo "<td>" . $row['supplier'] . "</td>";
echo "</tr>";
}
echo "</table>";
mysqli_close($con);
?>
但是,当我运行代码时,我不断收到此错误: 注意:未定义索引:q 这意味着 q 没有被发送到 php 文件,有什么想法可以解决这个问题吗? 我真的很感激我能得到的所有帮助。对不起,如果这是一个愚蠢的问题,但我真的很陌生,所以我非常感谢您的帮助。谢谢。
【问题讨论】:
标签: javascript php mysql ajax radio-button