<?php
$array = array("A Man of with Dignity",
		       "A supplier *Coming*",
                       "Break the \"Glasses\"",
                       "Broken 'law'"
                      );

foreach ($array as &$item) {
	$item = preg_replace('/\W/', '-', strtolower($item));
	$item = preg_replace('/-+$|^-+/', '', $item);
	$item = preg_replace('/-+/', '-', $item);
}

print_r($array);
?>