用PHP向mysql添加数据

<?php
	$name=$_POST['name'];
	$gender = $_POST['gender'];
	$age=$_POST['age'];
	#连接到数据库
	$link = mysql_connect('localhost','root','0624');
	if(!$link){
		die('对不起，服务器繁忙');
	}
	#设置字符集，选择数据库
	mysql_select_db('php2017');
	$query = "insert into people values (null,'$name','$gender','$age')";
	$add = mysql_query($query);

	if($add){
		echo '添加成功';
	}
	else{
		echo "添加失败";
	}