php Mysql类，功能齐全_mysql类库php-优快云博客

<? //php_爱好者版权所有。仅供学习之用，有什么问题可以问我，QQ502342112?>
<? class mysql
{
private $host;
private $user;
private $pass;
private $database;
private $charset;
function __construct($host,$user,$pass,$database,$charset)
{
$this->host=$host;
$this->user=$user;
$this->pass=$pass;
$this->database=$database;
$this->charset=$charset;
$this->connect();
}
private function connect()//连接函数
{
mysql_connect($this->host,$this->user,$this->pass) or die ("连接数据库服务器失败!");
mysql_select_db($this->database) or die ("连接数据库失败!");
mysql_query("set names $this->charset");
}
function select($sql,$tab,$col,$value)//选择函数
{
$select=mysql_query("select $sql from $tab where $col=$value");
$row=mysql_fetch_array($select);
return $row;
}
function insert($tab,$col,$value)//插入数据函数
{
mysql_query("INSERT INTO $tab($col)values($value)");
}
function update($tab,$col,$new_value,$colm,$value)//更新数据函数
{
mysql_query("UPDATE $tab SET $col=$new_value where $colm=$value");
}
function delete($tab,$col,$value)//删除数据函数
{
mysql_query("DELETE FROM $tab where $col=$value");
}
function close()//关闭连接函数
{
mysql_close();
}
}
//$mysql=new mysql("127.0.0.1","root","120360150","test","gbk");连接数据库
//$sql=$mysql->select("*","admin","id","3");//选择数据
//print_r($sql);//打印返回的数组
//$mysql->insert("admin","user_name,user_pass","'123','123'");插入数据
//$mysql->update("admin","user_pass","22","id","3");更新数据
//$mysql->delete("admin","id","4");删除数据
//$mysql->close();关闭连接
?>