<?phpclass link_mysql{ private $host,$uid,$pwd,$db,$link,$res; function link_mysql($_host,$_uid,$_pwd,$_db){ $this->host = $_host; $this->uid = $_uid; $this->pwd = $_pwd; $this->db = $_db; $this->link = mysql_connect($this->host,$this->uid,$this->pwd); mysql_select_db($this->db,$this->link); } function exec_sql($sql){ //if you use insert sentence,then you must open your link; $res = mysql_query($sql); return $res; }}$obj_link = new link_mysql('localhost','***','***','website');$res = $obj_link->exec_sql("select * from userinfo");$str = "[";while($rows = mysql_fetch_assoc($res)){ $str = $str."{name:$rows[name],password:$rows[password],age:$rows[age]},";}$str = rtrim($str,',') ."]";echo $str;?>