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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale1.0"/>
<title>管理员登录</title>
<link rel="stylesheet" type="text/css" href="css/bootstrap.min.css"/>
<script src="js/jquery-3.1.1.js"></script>
</head>
<body id="packt"style="padding-top: 60px;background-color:#D0E9C6;">
<div class="container">
<div class="col-md-5 col-lg-offset-4">
<h1 class="h1"><strong>Freefix管理员</strong>
<h1 class="h1" style="color: 0ffad">注册</h1>
<br>
<form role="form" action="" method="post" style="width:250px">
<div class="form-group">
<label for="enterusername">
请输入您的用户名
</label>
<input type="text" class="form-control" name="name" id="name"/>
</div>
<div id="check">
</div>
<div class="form-group">
<label for="enterpassword">请输入密码</label>
<input type="password" class="form-control" name="psd" id="psd"/>
</div>
<br />
<input id="submit" type="submit" class="btn btn-primary btn-default btn-block" value="reg" name=""submit">
</form>
<footer>版权声明 ©2016 电信专业勤助科研项目组.group Allright.reseverd</footer>
</div>
</div>
</body>
<script>
$('#name').blur(function () {
$.post("adminreg.php",{name:$(this).val()},function (result) {
if (result){
$("#check").html("<p color=\"red\">用户名存在！</p>");
}
else{
$("#check").html("<p color=\"green\">检测通过</p>");
}
})
})
</script>
</html>
<?php
/**
* Created by PhpStorm.
* User: inscredion
* Date: 2017/3/18
* Time: 14:08
*/
header("Content-type:text/html;charset = utf-8");
$link = mysqli_connect("localhost","root","");
$sel= mysqli_select_db($link,"db");
//if(!$sel){
// echo "数据库选择失败";
//}
if($_POST["name"])
{
$name = trim($_POST['name']);
$check = "select admin_name from admin WHERE admin_name='$name'";
$result=mysqli_query($link,$check);
$info = mysqli_fetch_row($result);
if($info!=NULL){
echo '1';
}
else{
echo '0';
}
}
请问大神，为什么输入失败
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