Menggabungkan gambar menggunakan php

image_frame.php

<?php

// menentukan frame, foto ,padding & file format (jpeg or png)
$frame = 'https://pixabay.com/static/uploads/photo/2016/02/02/01/31/background-1174639_960_720.png';
$foto = 'http://4.bp.blogspot.com/-MnbkNj0P6G4/Viq-PDdxdPI/AAAAAAAAAnw/kpSkfdXs3A0/s1600/yakuza-apocalypse-yayan-ruhian.jpg';
$padding = 150;
$format = 'png';

$frame_info = getImageSize($frame);
$foto_info = getImageSize($foto);
switch ($frame_info['mime']) {
    case 'image/jpeg':
        $frame_insert = imageCreateFromJPEG($frame);
        break;
    case 'image/png':
        $frame_insert = imageCreateFromPNG($frame);
        break;
    default:
        $frame_insert = '';
        $frame_msg = $frame_info['mime'] . ' images are not supported<br />';
        break;
}
switch ($foto_info['mime']) {
    case 'image/jpeg':
        $foto_insert = imageCreateFromJPEG($foto);
        break;
    case 'image/png':
        $foto_insert = imageCreateFromPNG($foto);
        break;
    default:
        $foto_insert = '';
        $foto_msg = $foto_info['mime'] . ' images are not supported<br />';
        break;
}

if(!empty($frame_insert) && !empty($foto_insert)){

	$is = imagesx($foto_insert);
	$iy = imagesy($foto_insert);

	list($width, $height) = getimagesize($frame);

	$foto_dst = imagecreatetruecolor($width, $height);
	imagecolortransparent($foto_dst, imagecolorallocate($foto_dst, 0, 0, 0));
	imagealphablending($foto_dst, false);
	imagesavealpha($foto_dst, true);
	imagecopyresized($foto_dst, $foto_insert, 0, 0, 0, 0, $width - ($padding*2), $height - ($padding*2), $is, $iy);
	imagecopymerge($frame_insert, $foto_dst, $padding, $padding, 0, 0, $width - ($padding*2), $height - ($padding*2), 100);

	// start buffering
	ob_start();
	// output jpeg or png format & kualitas
	if($format == 'jpeg'){
		imagejpeg($frame_insert, NULL, 85);
	}else if($format == 'png'){
		imagepng($frame_insert);
	}
	// mencetak output menjadi string
	$gambar = ob_get_contents();
	//selesai mencetak
	ob_end_clean();
	// membersihkan memory
	imagedestroy($frame_insert);

	// menampilkan output
	header('Content-type: image/'.$format);
	echo $gambar;
	
}else{
	
	echo (empty($frame_insert) ? $frame_msg : $foto_msg);
	
}

?> 

keren ini fungsinya bekerja..
ini kalo gambar lebih dari 2, misalkan 6 gt bisa ga?