An example of extracting text from multiple news items at the same time_PHP tutorial

This article is a small program that extracts text from a batch of news web pages. It can save the content of each news article as a text file with the news title as the file name. If you have a better solution, please contact me:
lwx3069@sina.com
Here is the news under "Today's News" in People's Daily Online as an example.
( $url) ? "" : $url = "http://www.unn.com.cn/GB/channel2/3/11/index.html"; // Today's News
if(isset($url) &&$url!="") {
$str = implode("",file($url));
$str_ary = explode("

",$str);
$str_ary = explode("
• ",trim($str_ary[1]));
  for ($i=0; $iif (strlen(trim($str_ary[ $i]))continue;
  }
  echo "News".$i.":".$str_ary[$i];
  $str1=strstr("$ str_ary[$i]",$str2=strstr("$str_ary[$i]"," target);
  $len1=strlen("$str1");
  $len2=strlen("$str2 ");
  $len=$len1-$len2;
  $url=substr("$str1",10,$len-10);
  if (strlen(trim($url))! =0) {
  $url = "http://www.unn.com.cn/".$url;
  define(CONTENTS_DIR,"./contents/");
  if(isset( $url)&&$url!="") {
  $str = implode("",file($url));
  $str1=explode(,$str); //Removing the file is useless Upper part
  $str2 = explode(
  ,$str1[1]);
  //Take out the lower part of the file and remove the useless lower part. This All the results obtained are useful
  $str3=explode(,$str2[0]); //Get the file title and text from the entire useful part
  $ str4=explode(,$str2[0]); //Get the date and time
  $str5=explode(,$str3[1]); //From the title and take out the title from the text part
  $title=str_replace("
  ","",$str5[0]);
  $str3=explode(
  ,$str2[0]) ; //Get the file text from the entire useful part
  $str3[1]=str_replace(
  ," "."　 ",$str3[1]);
  $str3[1]=str_replace( ,"",$str3[1]);
  $str3=strip_tags($str3[1]);
  $pf=trim($title).".txt";
  $ppf=fopen(CONTENTS_DIR."$pf",w);
  fputs($ppf,$title);
  fputs ($ppf,"$str4[0]");
  fputs($ppf,$str3);
  }
  }
  }
  }
  ?>
  http://www.bkjia.com/PHPjc/532189.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/532189.htmlTechArticleThis article is a small program that extracts text from a batch of news web pages. It can save the content of each news article. It is a text file with the news title as the file name. If there is a better way to deal with it,...