尝试连接到mysql并输入数据但是没有点击提交也会将空值上传,求解下面为代码:
<!DOCTYPE html>
<html>
<head><meta charset="utf-8">
<title>input</title>
</head>
<body>
<?php
$lian= mysqli_connect('localhost','root','root','anu');//连接到anu
if($lian){
echo"连接数据库成功</br>";
}
else{
echo"连接数据库失败</br>";
}
?>
<form action="Draft2.php" method="post">
<div>姓名：<input type="text" name="name" required=""></div>
<div>就业意愿：<input type="text" name="job" required=""></div>
<div>电话：<input type="text" name="phone" required=""></div>
<input type="submit" name="1" value="保存"><!--create-->
<?php
$name = $_POST['name'];
$job = $_POST['job'];
$phone = $_POST['phone'];
$jia = "INSERT INTO draft VALUES('$name','$job','$phone')";
// if ($jia) {
// echo "添加成功·</br>";
// }
// else{
// echo "添加失败";
// }
mysqli_query($lian,$jia);
// or die(mysqli_error($lian));
mysqli_free_result($lian);
mysqli_close($lian)//断开数据库连接
?>
</form>
</body>
</html> 
if($_POST){
接受值和添加数据库
}
22行开始执行数据写入了。加个if判断就好了，没有数据的时候不上传