PHP에서 기사의 텍스트 내용만 얻는 방법

<?php

 function curl_request ( $url , $post = '' , $cookie = '' ,  $returnCookie = 0 ) {

     $ua = $ua==''?$_SERVER ['HTTP_USER_AGENT']:'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; QQDownload 732; .NET4.0C; .NET4.0E; LBBROWSER)' ;

            $curl  =  curl_init ( ) ;

            curl_setopt ( $curl , CURLOPT_URL ,  $url ) ;

            curl_setopt ( $curl , CURLOPT_USERAGENT , $ua ) ;

            curl_setopt ( $curl , CURLOPT_FOLLOWLOCATION ,  1 ) ;

            curl_setopt ( $curl , CURLOPT_AUTOREFERER ,  1 ) ;

            curl_setopt ( $curl , CURLOPT_REFERER ,  "https://www.baidu.com" ) ;

            if ( $post )  {

                 curl_setopt ( $curl , CURLOPT_POST ,  1 ) ;

                 curl_setopt ( $curl , CURLOPT_POSTFIELDS ,  http_build_query ( $post ) ) ;

            }

            if ( $cookie )  {

                 curl_setopt ( $curl , CURLOPT_COOKIE ,  $cookie ) ;

            }

            curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);

            curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);

            curl_setopt ( $curl , CURLOPT_HEADER ,  $returnCookie ) ;

            curl_setopt ( $curl , CURLOPT_TIMEOUT ,  10 ) ;

            curl_setopt ( $curl , CURLOPT_RETURNTRANSFER ,  1 ) ;

            $data  =  curl_exec ( $curl ) ;

            if  ( curl_errno ( $curl ) )  {

                 return  curl_error ( $curl ) ;

            }

            curl_close ( $curl ) ;

            if ( $returnCookie ) {

                 list ( $header ,  $body )  =  explode ( "\r\n\r\n" ,  $data ,  2 ) ;

                 preg_match_all ( "/Set\-Cookie:([^;]*);/" ,  $header ,  $matches ) ;

                 $info [ 'cookie' ]   =  substr ( $matches [ 1 ] [ 0 ] ,  1 ) ;

                 $info [ 'content' ]  =  $body ;

                 return  $info ;

            } else {

                 //return  $data ;

                 $data=mb_convert_encoding($data, 'UTF-8', 'UTF-8,GBK,GB2312,BIG5');

                preg_match("/<body.*?>(.*?)<\/body>/is",$data,$match);

                $str= trim($match[1]);

      $html = strip_tags($str);

    $html_len = mb_strlen($html,'UTF-8');

    $html = mb_substr($html, 0, strlen($html), 'UTF-8');

    $search = array(" ","　","\n","\r","\t");

    $replace = array("","","","","");

    echo str_replace($search, $replace, $html);

            }

}

curl_request ( $url, $post = '' , $cookie = '' ,  $returnCookie = 0 );

?>