platform2.pehape

echo '<p>Platforms : ';
                    $xstr = '';
                    foreach ($platforms as $value) {
                        foreach ($value as $str) {
                            $xstr .= $str.', ';
                        }
                    }
                    $str = substr_replace($xstr, '', strrpos($xstr,','), 1);
                    echo $str;
                                        echo '</p>';