Answered Call in a random image from a server folder

<img src="[[!GetImage]]" />

/* Get Image snippet */
include MODX_CORE_PATH . 'components/dirwalker/model/dirwalker/dirwalker.class.php';
$searchStart = 'path/to/your/image/dir';
$recursive = false; // set to true to search child directories
$dw = new DirWalker();
$dw->setIncludes('.gif,.jpg,.png'); // list of strings required in filename
// $dw->setExcludes('.git,-all,-min'); // anything you want to exclude
// $dw->setExcludeDirs('cache,setup,_build,packages,.git');
$dw->dirWalk($searchStart, $recursive);
 
$fileArray = $dw->getFiles(); 
$files = array_keys($fileArray);

return array_rand($files);