/**
 * 发送查询语句
 *
 * @param 
 * @author 编程之家 jb51.cc jb51.cc
 **/
 function query($sql) {
  $this->result = @MysqL_query($sql,$this->conn);
  $this->queryCount++;
  if (!$this->result) {
   emMsg("sql语句执行错误：$sql <br />" . $this->geterror());
  }else {
   return $this->result;
  }
 }