proses_$katakunci

$gabung_idf = $judul." ".$hapus_koma." ".$hapus_spasi;
$kata       = explode(' ',preg_replace('/\s+/', ' ', $gabung_idf));
$arr_kata   = array();
foreach ($kata as $a=>$b){
    $add_new        = 1;
    $current_kata   = $kata[$a];
    foreach ($arr_kata as $c=>$d){
        if (strtolower($current_kata)==strtolower($arr_kata[$c]['kata'])){
        $arr_kata[$c]['hits']++;
        $add_new=0;
        }
    }
    if ($add_new==1){
    $arr_kata[]=array('hits'=>1,'kata'=>$current_kata);
    }
}
$i      = 3;
$batas      = 20;
rsort($arr_kata);
echo "<table border='1' cellspacing='1' cellpadding='1'>";
echo "<tr>";
echo "<th>Term/Kata</th>";
echo "<th>Kemunculan</th>";
echo "</tr>";
foreach ($arr_kata as $a=>$b){
    $muncul_hits    = $arr_kata[$a]['hits'];
    //$i++;
    if ($muncul_hits >= $i){
    $current_kata   = $arr_kata[$a]['kata'];
    $current_hits   = $arr_kata[$a]['hits'];
    echo "<tr>";
    echo "<td>".$current_kata."</td>";
    echo "<td>".$current_hits."</td>";
    echo "</tr>";
    $r_kata[]   = $current_kata;
    $sum_hits[] = $current_hits;
    }
}
echo "<tr>";
echo "<td></td>";
echo "<td>".array_sum($sum_hits)."</td>";
echo "</tr>";
echo "</table>";
echo "Kata Kunci: ".implode(', ', $r_kata);
echo "<br /><br />";
$kata_kunci = implode(' ', $r_kata);
unset($r_kata);