Write Chinese or watermark on the picture

It's actually a watermark

//session_start();
header("Content-type: image/png"); //Declare image
//$image = imagecreate(417, 294); //Create image Size
$image = imagecreatefrompng("cj.png");
$admin = imageCreatefrompng("admin.png");

$wfilew=imagesx($image);//Get the width of the image
$wfileh=imagesy( $image);//Get the height of the image
$waterw=imagesx($admin);//Get the width of the watermark image
$waterh=imagesy($admin);//Get the height of the watermark image

//$imgbg = imagecolorallocate($image,30, 30, 30); //Picture background color
//imagefill($image, 10, 10, $imgbg);
$colorBlack = imagecolorallocate($image, 0, 0, 0);
$colorBlacks = imagecolorallocate($image, 144, 144, 144);


imagettftext($image, 20, 0,270, 250, $colorBlack, "simkai.ttf", "LV Tao");
imagettftext($image , 12, 0,230, 424, $colorBlacks, "arial.ttf", "420528198602344812");
imagettftext($image, 12, 0,290, 450, $colorBlacks, "arial.ttf", "PHP100-20100001");
 imagettftext($image, 12, 0,260, 477, $colorBlacks, "arial.ttf", "PHP100-20100001");
imagecopy($image, $admin, 550, 350, 0, 0, $waterw,$waterh) ;
//imagestring("2.jpg",2,3,10,$waterstring,$colorBlack);
//$_SESSION['lvtao']=$waterstring;
imagepng($image);
?>







//$email = 'user@lvtao.net';
//$domain = strstr($email, '@');
/ /echo $domain; // prints @lvtao.net'
?>