<?php
/**
 *   Random Avatar Generator
 *   Based on GTAvatars by GTAGames.nl
 *   Script by David22 for GTAGames.nl
 *
 */

// Open the front directory en create an array with all png images in there
$dir = opendir("./front");
$fronts = array();
while($filename = readdir($dir)) {
    if(pathinfo($filename, PATHINFO_EXTENSION) == "png") {
        $fronts[] = $filename;
    }
}
closedir($dir);

// Perform the same action for the back directory
$dir = opendir("./back");
$backs = array();
while($filename = readdir($dir)) {
    if(pathinfo($filename, PATHINFO_EXTENSION) == "png") {
        $backs[] = $filename;
    }
}
closedir($dir);

// Choose a random index from the generated arrays
$front =  $fronts[array_rand($fronts)];
$back = $backs[array_rand($backs)];

// Tell the browser we're providing an image
header('content-type: image/png');

// The base will be the background
$image = imagecreatefrompng("back/" . $back);

// Open the foreground
$overlay = imagecreatefrompng("front/" . $front);

// Paste the foreground over the background
imagecopy($image, $overlay, 0, 0, 0, 0, 512, 512);

// Output the image
imagepng($image);

// Clear the buffer
imagedestroy($image);
?>