This has been on moodle.org for ages, but it might as well be in the
distribution too. It's not linked from anywhere in Moodle currently.
--- /dev/null
+<?PHP
+
+include('../config.php');
+
+require_login();
+
+if (!$users = get_records("user", "picture", "1", "id", "id,firstname,lastname")) {
+ error("no users!");
+}
+
+$title = get_string("users");
+
+print_header($title, $title, $title);
+
+foreach ($users as $user) {
+ echo "<a href=\"$CFG->wwwroot/user/view.php?id=$user->id&course=1\" title=\"$user->firstname $user->lastname\">";
+ echo "<img border=0 src=\"$CFG->wwwroot/user/pix.php/$user->id/f1.jpg\" width=100 height=100 alt=\"$user->firstname $user->lastname\" />";
+ echo "</a> \n";
+}
+
+print_footer();
+
+?>