add_titles.php

<?php

if( empty($argv[1]) ) {
	die("Usage:\nphp {$argv[0]} file");
}

function red($str) {
	return "\033[91m".$str."\033[0m";
}

function orange($str) {
	return "\033[93m".$str."\033[0m";
}

function green($str) {
	return "\033[92m".$str."\033[0m";
}

function get_top_host($str) {
	$str_arr = explode('.', $str);
	return implode('.', array_slice($str_arr, strlen(array_slice($str_arr, -2, 1)[0])<4?-3:-2));
}

$filename = $argv[1];
$filename_ext = @end(explode('.', $filename));
$filename_titled = str_replace('.'.$filename_ext, '_titled.'.$filename_ext, $filename);

$lines = file($filename);
$goods = array();

for( $i=$argv[2]??0;$i<count($lines);$i++ ) {

	echo $i.": ";
	$line = trim($lines[$i]);
	$host = explode('/', $line)[2];

	if( !isset($goods[$host]) ) {
		$ctx = stream_context_create(array('http'=>array('timeout'=>1),'ftp'=>array('timeout'=>1)));
		$page_html = preg_match("/^http/i", $line)?@file_get_contents($line, false, $ctx):'';
		preg_match("/<title>([^<]+)<\/title>/i", $page_html, $matches);
		$title = trim($matches[1]??'');
		$goods[$host] = $title;
	}
	else {
		$title = $goods[$host];
	}

	echo $line.(empty($title)?'':", ".green('[ '.$title.' ]'))."\n";
	file_put_contents($filename_titled, $line.(empty($title)?'':", [ ".$title.' ]')."\n", FILE_APPEND);
}