分割，截取连接字符串

if (!empty($iddstr)) {

                $darr=explode("\r\n",$iddstr);

                foreach ($darr as $key => $value) {

                    $lp_num = explode("——",$value);

                    if(strlen($lp_num[0])!=10||strlen($lp_num[1])!=10){

                        $tt = $key + 1;

                        $this->assign(‘iddstr‘,$iddstr);

                        $this->error("第".$tt."个联票号段的位数不为10");

                    }

                    if($key == 0){

                        $where .= " and (left(lianpiaono,10) between ‘" . $lp_num[0] . "‘ and ‘" . $lp_num[1] . "‘)";

                    }else{

                        $where .= " or (left(lianpiaono,10) between ‘" . $lp_num[0] . "‘ and ‘" . $lp_num[1] . "‘)";

                    }

                }

            }

分割，截取连接字符串

原文：http://www.cnblogs.com/srxhmxx/p/5148612.html