php连接mysql数据库简单范例

2019-06-18 02:17栏目:技术创新
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<?php
/*
create table user1(
id int primary key auto_increment,
name varchar(32) not null,
password varchar(64) not null,
email varchar(32) not null,
age tinyint unsigned not null
);

insert into user1(name,password,email,age)values('wxf',md5('123'),'wxf@sina.com',30);
insert into user1(name,password,email,age)values('zhangsan',md5('456'),'zhangsan@sina.com',30);
insert into user1(name,password,email,age)values('lisi',md5('789'),'lisi@sina.com',30);
*/
    //1.获取连接
    $conn = mysql_connect("localhost","root","123");

    if (!$conn){
        die("连接失败".mysql_error());
    }else{
        echo "连接成功<br/>";;
    }

    //2.选择数据库
    mysql_select_db("test");

    //设置编码
    mysql_query("set names UTF-8");

    $res = mysql_query($sql, $conn);

    $sql = "select * from user1";

    //3.接受资源
    $res = mysql_query($sql, $conn);

    while ($row = mysql_fetch_row($res)){
        foreach ($row as $key=>$value){
            echo "---".$value;
        }
        echo "<br/>";
    }

    //4.释放资源必须有
    mysql_free_result($res);
    //关闭mysql连接,写与不写效果不大
    mysql_close();
?>

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