Sertifikat PacmanCorp

<?php $nama = $_POST['nama'];
$ret = file_put_contents('nama.txt', $nama.'|', FILE_APPEND | LOCK_EX);
if (empty($nama)) { $gambar = "./1.jpg"; }
else { $gambar = "./sertifikat2.jpg"; }
$image = imagecreatefromjpeg($gambar);
$white = imageColorAllocate($image, 255, 255, 255);
$black = imageColorAllocate($image, 0, 0, 0);
$font = "./Beautiful Holiday.ttf";
$size = 80;     //definisikan lebar gambar agar posisi teks selalu ditengah berapapun jumlah hurufnya
$image_width = imagesx($image);     //membuat textbox agar text centered
$text_box = imagettfbbox($size,0,$font,$nama);
$text_width = $text_box[2]-$text_box[0]; // lower right corner - lower left corner
$text_height = $text_box[3]-$text_box[1];
$x = ($image_width/2) - ($text_width/2);    //generate sertifikat beserta namanya
imagettftext($image, $size, 0, $x, 370, $white, $font, $nama);  // tampilkan di browser
imagejpeg($image, "hasil/" . $nama . '.jpg');
imagedestroy($image);
header('location: hasil/'.$nama. '.jpg'); ?>