<?
$text=file_get_contents('1.txt');
function ch($re){
$tex=file_get_contents($re[1]);
preg_match("/<title>(.*?)<\/title>/",$tex,$tit);
$title="<a href=\"$re[1]\">".$tit[1]."</a>";
print_r($tit);
}
$text=preg_replace_callback("/<a href=\"(.*?)\">(.*?)<\/a>/","ch",$text);
file_put_contents('1.txt',$text);
?>