一个常用phpmysql数据库连接类_PHP教程

class ConnectionMySQL{
//主机
private $host="localhost";
//数据库的username
private $name="root";
//数据库的password
private $pass="";
//数据库名称
private $table="phptest";
//编码形式
private $ut="utf-8";


//构造函数
function __construct(){
$this->ut=$ut;
$this->connect();

}

//数据库的链接
function connect(){
$link=mysql_connect($this->host,$this->name,$this->pass) or die ($this->error());
mysql_select_db($this->table,$link) or die("没该数据库：".$this->table);
mysql_query("SET NAMES '$this->ut'");
}

function query($sql, $type = '') {
if(!($query = mysql_query($sql))) $this->show('Say:', $sql);
return $query;
}

function show($message = '', $sql = '') {
if(!$sql) echo $message;
else echo $message.'
'.$sql;
}

function affected_rows() {
return mysql_affected_rows();
}

function result($query, $row) {
return mysql_result($query, $row);
}

function num_rows($query) {
return @mysql_num_rows($query);
}

function num_fields($query) {
return mysql_num_fields($query);
}

function free_result($query) {
return mysql_free_result($query);
}

function insert_id() {
return mysql_insert_id();
}

function fetch_row($query) {
return mysql_fetch_row($query);
}

function version() {
return mysql_get_server_info();
}

function close() {
return mysql_close();
}

//向$table表中插入值
function fn_insert($table,$name,$value){
$this->query("insert into $table ($name) value ($value)");
}
//根据$id值删除表$table中的一条记录
function fn_delete($table,$id,$value){
$this->query("delete from $table where $id=$value");
echo "id为". $id." 的记录被成功删除!";
}
}

//调用方法

$db = new ConnectionMySQL();

$db->fn_insert('test','id,name,sex',"'','hongtenzone','M'");
$db->fn_delete('test', 'id', 1);

?>