php连接数据库插入数据

<form action="updata.php" method="post">
  姓名：<input type="text" value=""  name="uname">
  年龄：<input type="text" value="" name="uage">
  属性：<input type="text" value="" name="ujob">
  <input type="submit" value="提交">
</form>

<?php 

$name=$_POST['uname'];
$age=$_POST['uage'];
$job=$_POST['ujob'];

$servername = "localhost";
$username = "root";
$password = "123456";
$dbname = "style";

// 创建连接   面向过程写法
$conn = mysqli_connect($servername, $username, $password, $dbname);
// Check connection
if (!$conn) {
    die("连接失败: " . mysqli_connect_error());
}
mysqli_query($conn,'set names utf8');//设置字符集

$sql = "INSERT INTO ceshi(`name`, `age`,`job`)  VALUES ('$name', '$age','$job')";//查询这个表

//判断是否成功
if (mysqli_query($conn, $sql)) {
    echo "New record created successfully";
} else {
    echo "Error: " . $sql . "<br>" . mysqli_error($conn);
}

mysqli_close($conn);

 ?>