How to join more than one row if the primary key is the same (so the output is just one row)

Question

I'm sorry if the title is a little bit confusing.

First, this is my code.

<?php
$query = "SELECT DISTINCT t.idBerita, t.judul, t.headline, t.waktuAsal, t.lokasi, t.isiBerita, t.penulis, t.editor, t.sumber, t.waktuPengambilan, k.idKategori, g.namaKategori
    FROM tabelberita t
    LEFT JOIN tabelketerangan k ON t.idBerita = k.idBerita
    LEFT JOIN tabelkategori g ON k.idKategori = g.idKategori
    ORDER BY waktuPengambilan DESC";

$getnews = mysqli_query($link, $query);

while($row = mysqli_fetch_array($getnews)){
    $id = $row['idBerita'];
    $judul = $row['judul'];
    $headline = $row['headline'];
    $waktuAsal = $row['waktuAsal'];
    $lokasi = $row['lokasi'];
    $isiBerita = $row['isiBerita'];
    $penulis = $row['penulis'];
    $editor = $row['editor'];
    $sumber = $row['sumber'];
    $waktuPengambilan = $row['waktuPengambilan'];
    $kategori = $row['namaKategori'];
    
    echo '<h3 style="text-align:center; font-size:20px">' .$judul. '<br></h3>';
    echo '<p style="text-align:center"><i>' .$headline. ' - <b>' .$sumber. '</b></i></p><br>';
    echo '<p style="font-size:11px">Oleh: ' .$penulis. '<br>';
    echo 'Editor : ' .$editor. '<br>';
    echo 'Kategori : ' .$kategori. '<br>';
    echo 'Waktu Pengambilan : ' .$waktuPengambilan. '</p><br>';
    echo '<div id="isi' .$id. '" style="display:none;">';
    echo '<p style="text-align:justify">&emsp;' .$isiBerita. '</p></div><br>';
    echo '<a href="javascript:showMore('.$id.')" id="more' .$id. '" style="display:block;"> Read More >></a>';
    echo '<a href="javascript:showLess('.$id.')" id="less' .$id. '" style="display:none;"> Read Less >></a>';
    echo '<br><br><br><br>';
    echo '';            
}
?>

The table "tabelketerangan" has column idBerita, idKategori, and namaKategori. idBerita and idKategori is the primary key. idBerita is FK from tabelberita.

the relationship is one to many for tabelberita and tabelketerangan. that means one tabelberita could have many tabelketerangan but one tabelketerangan could only have one tabelberita.

i have an entry, which is the tabelberita have two tabelketerangan.

if i echo the query, it would give me something like this..

=======================

idBerita kategori

======================

id1 kat1

id1 kat2

======================

how to make it show like this??

==================================

idBerita kategori1 kategori2

==================================

id1 kat1 kat2

==================================

thanks in advance. :)