<?php
/*
PROCESS
  Load all files from $dir into an array. (specifically .pngs with -'s in the name).
    0-0-0.png = image 0, column 0, row 0.
    1-0-0.png would equal a whole new file to be generated from a different set of pngs.
  sort that array into sub-arrays for images, columns, rows.
  loop columns and rows merging them into master image.
  save master image as #.png depending on source set of images.
*/

// Get Files in current working directory.
$dir = getcwd ().'/images/';
$files = scandir ($dir);

// Loop through files, getting images.
$images = array ();
foreach ($files as $file)
{
    // If image aint PNG, skip.
    if (!strpos($file, ".png")) continue;
    if (!strpos($file, "-")) continue;
    // If image PNG add it to new array
    $str = substr($file, 0, strlen($file)-4);
    $arr = explode('-', $str);
    $images[(int)$arr[0]][(int)$arr[1]][(int)$arr[2]] = $file;
}
$finishedImages = array();
foreach ($images as $index => $imgarr)
{
    $temp = getimagesize ($dir.$imgarr[0][0]);
    $x = $temp[0];
    $y = $temp[1];
    // load images
    foreach ($imgarr as $cindex => $column)
    {
        foreach ($column as $rindex => $row)
        {
            $imgarr[$cindex][$rindex] = imagecreatefrompng($dir.$row);
            if (imagesx ($imgarr[$cindex][$rindex]) != $x OR imagesy($imgarr[$cindex][$rindex]) != $y) die ("non-matching image sizes");
        }
    }
    // ! create a new GD image to get the ball rolling
    $finishedImages[$index] = imagecreatetruecolor($x*count($imgarr), $y*count($imgarr[0]));
    foreach ($imgarr as $cindex => $column)
    {
        foreach ($column as $rindex => $row)
        {
            imagecopy ($finishedImages[$index], $row, $cindex*$x, $rindex*$y, 0, 0, $x, $y);
        }
    }
    imagepng ($finishedImages[$index] , $dir.$index.'.png', 0);
}
?>

<?php
/*
PROCESS
  Load all files from $dir into an array. (specifically .pngs with -'s in the name).
    0-0-0.png = image 0, column 0, row 0.
    1-0-0.png would equal a whole new file to be generated from a different set of pngs.
  sort that array into sub-arrays for images, columns, rows.
  loop columns and rows merging them into master image.
  save master image as #.png depending on source set of images.
*/

// Get Files in current working directory.
$dir = getcwd ().'/images/';
$files = scandir ($dir);

// Loop through files, getting images.
$images = array ();
foreach ($files as $file)
{
    // If image aint PNG, skip.
    if (!strpos($file, ".jpg")) continue;
    if (!strpos($file, "-")) continue;
    // If image PNG add it to new array
    $str = substr($file, 0, strlen($file)-4);
    $arr = explode('-', $str);
    $images[(int)$arr[0]][(int)$arr[1]][(int)$arr[2]] = $file;
}
$finishedImages = array();
foreach ($images as $index => $imgarr)
{
    $temp = getimagesize ($dir.$imgarr[0][0]);
    $x = $temp[0];
    $y = $temp[1];
    // load images
    // ! create a new GD image to get the ball rolling
    $finishedImages[$index] = imagecreatetruecolor($x*count($imgarr), $y*count($imgarr[0]));
    foreach ($imgarr as $cindex => $column)
    {
        foreach ($column as $rindex => $row)
        {
            #if (imagesx ($imgarr[$cindex][$rindex]) != $x OR imagesy($imgarr[$cindex][$rindex]) != $y) die ("non-matching image sizes");
            echo "col:".$cindex." row:".$rindex."\n";
            $image = imagecreatefromjpeg($dir.$row);
            imagecopy ($finishedImages[$index], $image, $cindex*$x, $rindex*$y, 0, 0, $x, $y);
            imagedestroy($image);
        }
    }
    imagejpeg ($finishedImages[$index] , $dir.$index.'.jpg', 100);
}
?>