mysql连接成功但提示mysql_query未定义

<?php/* Filename[book.php] */require_once("header.php");#连接另一台数据库$mysql_ = new MySqlList();#获取通讯录$addrPersons= empty($_SESSION['uid'])?null:$mysql->getAddrPerson($_SESSION['uid']);	//个人//个人通讯录$dataPers = (empty($addrPersons['addrperson']))?array():json_decode(base64_decode($addrPersons['addrperson']),true);//$addrPersons  array();#获取公司通讯录$stafflists = $mysql->getDomainUserList($domain);$stafflists_ = $mysql_->getDomainUserList($domain);debug(count($stafflists));  //29debug(count($stafflists_)); //57

<?php/* Filename[book_search.php] */date_default_timezone_set('PRC');Header("content=text/html; charset=UTF-8");session_start();require_once (dirname(__FILE__) . "/../classes/action/initialize.php");require_once (dirname(__FILE__) . "/../classes/mode/xmlparse.inc");require_once (dirname(__FILE__) . "/../classes/mode/mysql_mode_class.php");require_once (dirname(__FILE__) . "/../classes/mode/mysql_list_class.php");#连接本地数据库$mysql = new MySqlModeMail();#连接另一台数据库//$othersql = new MySqlList();#获取通讯录$addrPersons= empty($_SESSION['uid'])?null:$mysql->getAddrPerson($_SESSION['uid']);	//个人$dataPers = (empty($addrPersons['addrperson']))?array():json_decode(base64_decode($addrPersons['addrperson']),true);//$addrPersons  null#获取公司通讯录$stafflists = $mysql->getDomainUserList($domain);//$stafflists_ = $othersql->getDomainUserList($domain);debug($stafflists);exit;//debug($stafflists_);

require_once (dirname(__FILE__) . "/../classes/mode/mysql_mode_class.php");require_once (dirname(__FILE__) . "/../classes/mode/mysql_list_class.php");//这两行也有在header.php中包含//这两个类中的执行函数是一样的 class MySqlList {	//sql params	public $server;	public $username;	public $password;	public $database;	public $code;	function MySqlList(){		global $webpost;//		include("xmlparse.inc");		$sqlist = parse_xml_config($webpost['path']['sqlist'],"sqlist");		if(!empty($sqlist) && is_array($sqlist)){			foreach($sqlist['list'] as $list){				if(strcmp($list['server'],$_SERVER['SERVER_ADDR'])){					$config = $list;				}			}//end for		}//end if		if(empty($config))			die("读取MySql配置出错。");		$this->server = $config['server'];		$this->username = $config['username'];		$this->password = $config['password'];		$this->database = $config['database'];	} 	//connect sql 	function connect(){		$connect = mysql_connect($this->server, $this->username, $this->password);		if (!$connect){			die("服务器连接失败：".mysql_error());		}		$conn = mysql_select_db($this->database,$connect) or die("数据库连接失败!<br/>");		mysql_query("set names utf8");		return $connect;	}	//execute sql	function querySql($sql,$array=2,$fail=false,$succe=false,$suc_href=false,$type=MYSQL_ASSOC){ 		global $webpost;		$result = mysql_query($sql,$this->connect()); //提示在这里终止		if(!$result)     		 die("SQL: {$sql} <br>Error: " . mysql_error() );		if (mysql_affected_rows() >0){//			write_sys_log("success SQL:".$sql);			switch($array){				case 1:					$arry = array();					while($arr = @mysql_fetch_array($result,$type)){						array_push($arry,$arr);					}					return $arry;				case 2:					$arr = @mysql_fetch_array($result,$type);					return $arr;				default:					return 1;			}		}elseif(mysql_affected_rows() == 0 && !mysql_errno()){//			write_sys_log("empty SQL:".$sql);			return false;		}elseif(mysql_errno()){//			write_sys_log("failed SQL:".$sql);			return 0;		}		mysql_close();	}	#获取另一台数据库的用户数据 	function getDomainUserList($domain){ 		$sql = "SELECT m.id,m.did,m.code,username,realname,domain FROM table_a m ".			"JOIN table_b d ON m.did=d.id WHERE domain='{$domain}'";		return $this->querySql($sql,1); 	} }