PHP에서 데이터베이스에 데이터를 저장하는 방법

<?php
define("DB_HOST","localhost");
define("DB_USER","root");
define("DB_PWD","");
define("DB_NAME","wordpress4");
$conn = @mysql_connect(DB_HOST,DB_USER,DB_PWD) or die("连接服务器出错：".mysql_error());
@mysql_select_db(DB_NAME) or die("连接数据库出错：".mysql_error());
@mysql_query(&#39;SET NAMES UTF8&#39;);
?>

<?php
$sql = "insert into wp_kaijiang(timer,number,datar) values (&#39;$timer&#39;,&#39;$number&#39;,&#39;$datar&#39;)";
mysql_query($sql);//借SQL语句插入数据

?>

<?php
mysql_close();
?>

<?php
define("DB_HOST","localhost");
define("DB_USER","root");
define("DB_PWD","");
define("DB_NAME","wordpress4");
$conn = @mysql_connect(DB_HOST,DB_USER,DB_PWD) or die("连接服务器出错：".mysql_error());
@mysql_select_db(DB_NAME) or die("连接数据库出错：".mysql_error());
@mysql_query(&#39;SET NAMES UTF8&#39;);

$sql = "insert into wp_kaijiang(timer,number,datar) values (&#39;$timer&#39;,&#39;$number&#39;,&#39;$datar&#39;)";

 mysql_query($sql);//借SQL语句插入数据
?>