/*
Note:
Some care needs using on how to divide the imageas sometimes a small image is created that causes a problem.
*/
// If the form has been submitted do this
if ( $Submit ) { 
// Temporary upload image name
$image = $_FILES['filename']['tmp_name'];
// Get the image dimensions
$size=GetImageSize( $original_image );
// Name to save the image asin this case the same as the original
$new_image = $_FILES['filename']['name'];
// Amount of images in x
$qty_x = $_POST['x'];
// Amount of images in y
$qty_y = $_POST['y'];
// Get the size of the original image
$size = getimagesize($image);
// Size to crop the images to
$crop_x = round( $size[0]/$qty_x);
$crop_y = round( $size[1]/$qty_y);
// Canvas for combined imagesit will be trimmed to the finished image size in the code
$width = ( $size[0] * 1.5 );
$height = ( $size[1] *1.5 );
// Crop the image
system("convert $image -crop {$crop_x}x{$crop_y} image-%d.jpg"); 
// Remove the .jpg from the filenames
foreach (glob("*.jpg") as $filename) {
$file = str_replace('.jpg', '', $filename );
system("convert $filename -background black +polaroid $file.png"); 
}
// Delete tempory images
foreach (glob("*.jpg") as $filename) {
unlink($filename); 
}
// Set $command variable
$command = "";
// Loop through generating the image layout
for ($j = 0; $j < $qty_y; $j++) { 
  for ($i = 0; $i < $qty_x; $i++) {    $n = $j<0 ? $qty_x*($j)+$i : $i; 
  $offset_x= ( ($crop_x * $i ) + rand(2, 25));
  $offset_y=( ($crop_y * $j ) + rand(2, 25));
  $command .= " image-$n.png -geometry +$offset_x+$offset_y -composite" ;  } 
  }
// Produce the combined image
system ( "convert -size {$width}x{$height} xc:silver $command -trim $new_image"); 
// Delete tempory images
foreach (glob("*.png") as $filename) {
unlink($filename); 
}
}
else { ?>
<form method="post" action="<?php echo $PHP_SELF; ?>" enctype="multipart/form-data"> 
<label>File to upload:</label>
<input type="file" name="filename"  /><br />
<label>Amount of images in X</label>
<input type="text" name="x">
<label>Amount of images in Y</label>
<input type="text" name="y">
<input type="Submit" name="Submit" value="Submit" />