CHANGE LANGUAGE WITH PHP SESSION

<?php
/* PHP Script
Change Language With PHP (Session)
Created By Wildan Izzudin.
    (c) 2018 Underxploit
*/
error_reporting(0);
session_start();
function pac($str) {
    echo $str;
}

// --- Konfigurasi Bahasa :v --- //
if($_SESSION['bahasa'] == 'inggris') {
$var = array(
    '1' => 'One',
    '2' => 'Two',
    '3' => 'Three',
    'change' => 'Change Language With PHP',
    'quote' => 'PHP is a minor evil perpetrated and created by incompetent amateurs, whereas Perl is a great and insidious evil, perpetrated by skilled but perverted professionals.',
    'love' => 'I Love You :*');
} else if($_SESSION['bahasa'] == 'gaul') {
$var = array(
    '1' => 'Tu',
    '2' => 'Wa',
    '3' => 'Ga',
    'change' => 'Ubah Bahasa Pake PHP',
    'quote' => '2 3 Tutup Botol, Muka Lu Kaya Kontol',
    'love' => 'PepeQue :*');
} else { // else ini adalah bahasa default :v
$var = array(
    '1' => 'Satu',
    '2' => 'Dua',
    '3' => 'Tiga',
    'change' => 'Mengubah Bahasa Dengan PHP',
    'quote' => 'PHP adalah kejahatan kecil yang dilakukan dan diciptakan oleh amatir yang tidak kompeten, sedangkan Perl adalah kejahatan besar dan berbahaya, yang dilakukan oleh profesional yang terampil namun menyimpang.',
    'love' => 'Aku Sayang Kamu :*');
}

// --- Konten --- //
pac('<html><head><title>'.$var[change].'</title><meta name="viewport" content="width=device-width, initial-scale=1">');
pac('<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css"/>');
pac('<link rel="stylesheet" href="//fonts.googleapis.com/css?family=Cabin"/>');
pac('<style>
*{ box-sizing: border-box; }
*:focus { outline: 0; }
body {
    max-width:400px;
    background: #191919;
    font-family: "Cabin";
    font-size:14px;
    color:#1D9D73;
    margin:auto;
}
select {
    font-family: "Cabin";
    padding:6px;
    width:100%;
    font-size:14px;
    border:1px solid #222;
    background:none;
    color:#1D9D73;
    -webkit-appearance: none;
    -moz-appearance: none;
    text-indent: 1px;
    text-overflow: "";
}
button {
    font-family: "Cabin";
    padding:8px;
    width:100%;
    font-size:14px;
    border:1px solid #222;
    background:none;
    color:#1D9D73;
}
button:hover, select:hover {
    border:1px solid #1D9D73;
    transition: all 0.5s;
    padding:6px;
}
hr {
    border: 0;
    height: 1px;
    background-image: -webkit-linear-gradient(left, #1D9D73, #1D9D73, #1D9D73);
    background-image: -moz-linear-gradient(left, #1D9D73, #1D9D73, #1D9D73);
    background-image: -ms-linear-gradient(left, #1D9D73, #1D9D73, #1D9D73);
    background-image: -o-linear-gradient(left, #1D9D73, #1D9D73, #1D9D73);
}
::selection {
    background-color: rgba(201,223,255,0.2);
    color: #ffffff;
}
::-moz-selection {
    background-color: rgba(201,223,255,0.1);
    color: #ffffff;
}
h3 {
    font-weight: normal;
    font-size:15px;
}
table { width:100%; }
.wrap { margin:10px; }
</style>');

pac('</head><body>');
pac('<center><br><br>
<h3>'.$var[change].'</h3></center><div class="wrap">');
pac('<hr>');

pac('- '.$var[1].'<br> - '.$var[2].'<br> - '.$var[3].'<br> - '.$var[love]);

pac('<br><br><center>'.$var[quote].'</center><br>');

pac('<hr>');


if(isset($_POST['change'])) {
    $_SESSION['bahasa'] = $_POST['lang'];
    header('Location: '.$_SERVER['PHP_SELF']);
}

pac('<form action="" method="post">
    <table>
<td style="width:80px"><select name="lang">
        <option value="indonesia">Indonesia</option>
        <option value="inggris"');if($_SESSION['bahasa'] == 'inggris'){ pac('selected');}pac('>Inggris</option>
        <option value="gaul"'); if($_SESSION['bahasa'] == 'gaul') { pac('selected');}pac('>Gaul</option>
    </select></td><td style="width:20%"><button name="change" type="submit"><i class="fa fa-globe"></i></button></td></table>');
?>