PHP操作Mysql数据库

 1、conn.php

<?php
    header ( "Content-Type:text/html;charset=utf-8" );
    //数据库连接相关常量
    define ( 'DB_Host', 'localhost' );
    define ( 'DB_UserName', 'root' );
    define ( 'DB_Password', 'admin' );
    define ( 'DB_Name', 'myphp' );
    //1、数据库连接
    $conn = @mysql_connect ( DB_Host, DB_UserName, DB_Password ) or die ( '数据库连接失败：' . mysql_error () );
    if ($conn) {
        //echo '数据库连接成功啦';
    }
    //echo $conn;
    mysql_query("set names 'utf8'")or die('字符集设置错误：'.mysql_error());
    //2、指定数据库
    mysql_select_db(DB_Name,$conn) or die('数据库错误：'.mysql_error());

?>

2、mysql.php

 

<?php
    require 'conn.php';

    $query = "select * from student";
    //3、查询数据
    $result = mysql_query($query)or die('SQL错误：'.mysql_error());
    while($row=mysql_fetch_array($result,MYSQL_ASSOC)){
        echo $row['id'].','.$row['name'].','.$row['regdate'].'<br>';
    }
    //4、释放结果集资源
    mysql_free_result($result);

    //insert data
    $insert="insert into student(name,regdate) values('胡千好',now())";
    mysql_query($insert) or die(mysql_error());

    //关闭数据库
    mysql_close($conn);
?>