Парсер ключевых слов

<?php

$error=1;
if($error==1){error_reporting(E_ALL);ini_set('display_errors', 'on');}
else {error_reporting(0);ini_set('display_errors', 'off');}

$tema=isset($_GET['tema'])?strip_tags($_GET['tema']):"test";
$tm=isset($_GET['tema'])?"&tema=$tema":"";
$tmg=isset($_GET['tema'])?"?tema=$tema":"";
if(!file_exists($tema)){mkdir($tema, 0700);echo "<meta http-equiv=\"refresh\" content=\"1; url=$tmg\">";}

$_db="$tema/$tema.db";
$files=array("key","bad");
foreach($files as $line)
{
    $fil[$line]=$tema.'/'.$line.'_'.$tema.'.txt';
    if (!file_exists($fil[$line]))
    {
        $fp = fopen($fil[$line], "w");
        fwrite($fp, "");
        fclose($fp);
    }
    $arfil[$line]=file($fil[$line]);
}
$p=isset($_GET['p'])?$_GET['p']:0;
$st=isset($_GET['stop'])?"&stop=":"";
$p20=$p*20;
$p2020=$p20+20;
if (isset($_GET['feed']))
{
    if (!file_exists($_db))
    {
        $db = new SQLite3($_db);
        $db->busyTimeout(5000);
        $db->exec('PRAGMA journal_mode=WAL;');
        $db->exec('CREATE TABLE IF NOT EXISTS pages (id INTEGER PRIMARY KEY, key TEXT UNIQUE);');
        $db->close();
    }
    else
    {
        $db = new SQLite3($_db);
        $db->busyTimeout(5000);
        $db->exec('PRAGMA journal_mode=WAL;');
        if(isset($_POST['key']))
        {
            $ar=explode("\n",strip_tags($_POST['key']));
            $db->exec('BEGIN IMMEDIATE;');
            foreach($ar as $key)
            {
                if(empty($key)) continue;
                $lin = $db->escapeString(trim($key));
                @$db->exec("INSERT INTO pages (key) VALUES ('".$lin."');");
            }
            $db->exec('COMMIT;');
        }
        $lh = $db->query("SELECT * FROM pages ORDER BY id ASC LIMIT $p20,20;");
        $count = $db->querySingle('SELECT count(*) FROM pages;');

        while ($echo = $lh->fetchArray())
        {
            $arkey[]=$echo['key'];
        }
        if ($_GET['feed'] == 'gen')
        {
            foreach($arkey as $key)
            {
                $key = mb_strtolower($key, 'utf-8');
                $keyu=preg_replace("/ /",'+',$key);
                $keyu=urlencode($keyu);

                //////////////////////  ----------  //////////////////////

                $url="http://sgs.sputnik.ru/?format=xml&type=web&query=$keyu";
                $xml = simplexml_load_file($url);
                $offer=$xml->item;
                foreach($offer as $line){$attr=$line->attributes();$keys[]=$attr['header'];}

                $url="http://suggests.go.mail.ru/ie8?q=$keyu";
                $xml = simplexml_load_file($url);
                $offer=$xml->Section->Item;
                foreach($offer as $line)$keys[]=$line->Text;

                $url="http://autocomplete.nigma.ru/complete/query_help.php?suggest=true&q=$keyu";
                $fff=file_get_contents($url);
                $response = json_decode($fff, true);
                foreach($response[1] as $lin)$keys[]=$lin;

                $url="https://suggest.yandex.ru/suggest-ff.cgi?part=$keyu&uil=ru&sn=50";
                $fff=file_get_contents($url);
                $response = json_decode($fff, true);
                foreach($response[1] as $lin)$keys[]=$lin;

                $url="https://search.yahoo.com/sugg/gossip/gossip-us-fp/?nresults=20&command=$keyu";
                $fff=file_get_contents($url);
                $fff=preg_replace("/fxsearch\((.*)\,\[\]\,\[\](\])\)/",'\1\2',$fff);
                $response = json_decode($fff, true);
                foreach($response[1] as $lin)$keys[]=$lin;
        /*
                $url="https://clients1.google.com/s?client=opera&q=$keyu";
                $fff=file_get_contents($url);
                $response = json_decode($fff, true);
                foreach($response[1] as $lin)$keys[]=$lin;
        */
                $url="http://ss.ask.com/query?li=ff&sstype=prefix&num=20&q=$keyu";
                $fff=file_get_contents($url);
                $response = json_decode($fff, true);
                foreach($response[1] as $lin)$keys[]=$lin;

                //////////////////////  ----------  //////////////////////

                $keys=array_unique($keys);

                $db->exec('BEGIN IMMEDIATE;');
                foreach($keys as $k=>$line)
                {
                    $rr="";
                    foreach ($arfil['bad'] as $black)
                    {
                        $black = trim($black);
                        preg_match("/$black/",$line,$re);
                        if(!empty($re)) $rr.=$re[0];
                    }
                    if(!empty($rr)) continue;
                    $lin = $db->escapeString(trim($line));
                    @$db->exec("INSERT INTO pages (key) VALUES ('$lin');");
                }
                $db->exec('COMMIT;');
            }
            $p++;
            if($count<$p20) {echo "Все"; exit;}
            echo "feed=gen&p=$p$tm$st<br>с $p20 по $p2020<br>";

            if(!empty($st))
            {
                echo "
                <form  action=\"index.php\" target=\"generator\" method=\"get\">
                    <input type=\"hidden\" name=\"feed\" value=\"gen\"/>
                    <input type=\"hidden\" name=\"tema\" value=\"$tema\"/>
                    <input type=\"text\" name=\"p\" value=\"$p\"  size=\"2\" />
                    <input type=\"submit\">
                </form>";
            }
            else
            {
                echo "
                <A HREF=\"?feed=gen&p=$p$tm&stop=\" target=\"generator\">стоп</A>
                <meta http-equiv=\"refresh\" content=\"1; url=?feed=gen&p=$p$tm$st\">";
            }
        }

        if ($_GET['feed'] == 'html')
        {
            $list = $db->query('SELECT id, key FROM pages ORDER BY id DESC LIMIT 3000;');
            echo "<A HREF=\"?feed=html$tm\">обновить</A><br>";
            while ($echo = $list->fetchArray())
            {
                echo $echo['id'].'  '.$echo['key'].'<br>';
            }
        }

        if ($_GET['feed'] == 'txt')
        {
            $list = $db->query('SELECT key FROM pages;');
            echo "Сохранено: $count ключей $tema";
            $file = fopen ("$tema/$tema.txt","w+");
            while ($echo = $list->fetchArray())
            {
                fputs($file,$echo['key']."\n");
            }
            fclose ($file);
        }

        foreach($files as $k=>$fk)
        {
            $line=$fil[$fk];
            if ($_GET['feed'] == $fk)
            {
                if(isset($_POST[$fk]))
                {
                    file_put_contents($line, strip_tags($_POST[$fk]));
                    echo "<meta http-equiv=\"refresh\" content=\"1; url=?feed=$fk$tm\">";
                }
                $bf[$k]=@file_get_contents($line);
                echo "$line<br/>
                <form  action=\"index.php?feed=$fk$tm\" method=\"post\">
                    <textarea rows=\"42\" cols=\"24\"  name=\"$fk\">$bf[$k]</textarea><br/>
                    <input type=\"submit\">
                </form>
                ";
            }
        }

        $db->close();
    }
}
else
{
    header('Content-Type: text/html; charset=UTF-8');
    echo "
    <table>
    <tr>
    <td colspan=2>
    <A HREF=\"/\">главная</A> |
    <A HREF=\"?feed=gen$tm&p=$p\" target=\"generator\">пуск</A> |
    <A HREF=\"?feed=txt$tm\" target=\"keytxt\">сохранить</A> |
    <A HREF=\"$tema/$tema.txt\" target=\"keytxt\">скачать</A></td>
    <td colspan=2>
    <form  action=\"/\" method=\"get\">
        <input type=\"text\" name=\"tema\" value=\"$tema\"  maxlength=\"10\" />
        <input type=\"submit\">
    </form>
    </tr>
    <tr>
    <td><iframe src=\"?feed=key$tm\" width=\"220\" height=\"700\" frameborder=\"0\" scrolling=\"yes\"></iframe></td>
    <td><iframe src=\"?feed=bad$tm\" width=\"220\" height=\"700\" frameborder=\"0\" scrolling=\"yes\"></iframe></td>
    <td><iframe src=\"?feed=html$tm\" width=\"500\" height=\"700\" frameborder=\"0\" scrolling=\"yes\"></iframe></td>
    <td><iframe  name=\"generator\" width=\"500\" height=\"400\" frameborder=\"0\" scrolling=\"yes\"></iframe><br>
    <iframe  name=\"keytxt\" width=\"500\" height=\"300\" frameborder=\"0\" scrolling=\"yes\"></iframe></td>
    </tr>
    </table>";
}
?>