PHP를 사용하여 웹 페이지의 모든 고정 시드 링크를 일괄적으로 가져오는 방법

<?php
header("content-type:text/html;charset=utf8");
$str = file_get_contents(&#39;./ShowFile.asp&#39;);
$str1 = &#39;<a href="ed2k&#39;;
$str2 = &#39;">&#39;;
$pos1 = 0;
$pos2 = 0;
$pos3 = 0;
$len = strlen($str);
$ed2k = &#39;&#39;;
for($i=5000;$i<$len; ){
  $pos1 = strpos($str,$str1,$i) + 9;
  $pos2 = strpos($str,$str2,$pos1) - 2;
  $pos3 = $pos2 - $pos1;
  //说明特征连接已经不存在 放弃寻找
  if($pos1 == 9){break;}
  $ed2k = substr($str,$pos1,$pos3+1)."\r\n";
  file_put_contents(&#39;d:/log/a.txt&#39;,$ed2k,FILE_APPEND);
  echo substr($str,$pos1,$pos3+1).&#39;<hr/>&#39;;
  $i = $pos2;
}
?>