public function execute()
{
if (!file_exists($this->overlay)) {
throw new \Exception('Overlay image not found.');
}
if (!file_exists($this->base)) {
throw new \Exception('Base image not found.');
}
$results = array();
$command = Composite::prepareCommandString();
echo 'Executing command: ' . $command;
exec($command, $results);
$this->executed = true;
//parse results for errors/success
return $results;
}
