PHP语言 -- Ajax 注册用户名是否可用 

<body>
<h1>注册</h1>
<div><input type="text" id="user" /><div></div></div>
</body>

<script type="text/javascript">

$(document).ready(function(e){

//判断用户名是否可用
$("#user").blur(function(){

var uid = $(this).val();

$.ajax({

url:"chuli.php",
data:{u:uid,type:1},
type:"POST",
datatype:"TEST"
success:function(d){

if(d=="OK")
{
$("$ts").html("用户名可用");
}
else
{
$("#ts").html("<span style='color=red'>该用户名已经存在</span>");
}

}

});

})



});

</script>

 chuli.php

<?php  //不要有空 顶到头写

$type=$_POST["type"];

include "DBDA.php";

$db = new DBDA();

switch($type)
{
case 0:

$uid = $_POST["u"]; //接收
$pwd = $_POST["p"];


$sql = "select count(*) from login where username='{$uid}' and password='{$pwd}'";

$attr = $db->Query($sql);

if($attr[0][0]==0)
{
echo "用户名密码不正确";
}
else
{
echo "OK";
}

break;
case 1:

$uid = $_POST["u"];

$sql = "select count(*) from login where username='{$uid}'";

$attr = $db->Query($sql);

if($attr[0][0]==0)
{
echo "OK";
}
else
{
echo "NO";
}

break;
｝

 

posted on 2016-04-25 13:49  一方通行o  阅读(225)  评论(0)  编辑  收藏  举报

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