A small script to collect links and extract titles

gistfile1.phtml

<?php
$path = dirname(__FILE__);
$urlText = '';
$urls = file_get_contents($path . '/tmp/list');
$urls = explode("\n", $urls);
$urls = array_unique($urls);
natcasesort($urls);
if (!isset($_GET['op'])) {
    $_GET['op'] = 'default';
}
switch ($_GET['op']) {
    case 'all':
        foreach ($urls AS $url) {
            $cache = $path . '/tmp/' . md5($url);
            if (!file_exists($cache) || filesize($cache) < 10) {
                file_put_contents($cache, file_get_contents($url));
            }
            $news = file_get_contents($cache);
            $titlePos = stripos($news, '<title');
            $titlePos = stripos($news, '>', $titlePos) + 1;
            $title = '';
            if (false !== $titlePos) {
                $titleEnd = stripos($news, '</title>', $titlePos);
                $title = substr($news, $titlePos, $titleEnd - $titlePos);
                $title = trim(str_replace(array("\n"), array(' '), $title));
            }
            if(empty($news)) continue;
            $charsetPos = stripos($news, 'charset=');
            if(false !== $charsetPos) {
                $charsetPos += 8;
                $charsetEnd = stripos($news, '>', $charsetPos) + 1;
                $fromEncoding = substr($news, $charsetPos, $charsetEnd - $charsetPos);
                $fromEncoding = str_replace(array(' ', '/' , '>', '"', '\''), '', $fromEncoding);
            }
            $title = mb_convert_encoding($title, 'utf-8', $fromEncoding);
            $urlText .= implode("\t", array(
                        $url,
                        $title,
                    )) . "\n";
        }
        file_put_contents($path . '/tmp/list', implode("\n", $urls));
        break;
    default:
        if (!empty($_POST['urls'])) {
            $newUrls = explode("\n", $_POST['urls']);
            $fh = fopen($path . '/tmp/list', 'a');
            foreach ($newUrls AS $newUrl) {
                $newUrl = trim($newUrl);
                if (false === array_search($newUrl, $urls)) {
                    fputs($fh, $newUrl . "\n");
                    $cache = $path . '/tmp/' . md5($newUrl);
                    if (!file_exists($cache) || filesize($cache) < 10) {
                        file_put_contents($cache, file_get_contents($newUrl));
                    }
                    $news = file_get_contents($cache);
                    $titlePos = stripos($news, '<title');
                    $titlePos = stripos($news, '>', $titlePos) + 1;
                    $title = '';
                    if (false !== $titlePos) {
                        $titleEnd = stripos($news, '</title>', $titlePos);
                        $title = substr($news, $titlePos, $titleEnd - $titlePos);
                        $title = trim(str_replace(array("\n"), array(' '), $title));
                    }
                    $urlText .= implode("\t", array(
                                $newUrl,
                                $title,
                            )) . "\n";
                }
            }
            fclose($fh);
        }
}
?>
<form method="post" action="index.php?op=default">
    <textarea name="urls" cols="120" rows="30"><?php echo $urlText; ?></textarea>
    <br /><br /><input type="submit" />
    <br /><br /><a href="index.php?op=all">show all</a>
</form>