Pre-sort by name and host

php/utils/servers-rooms.php

@@ -1,5 +1,4 @@
 <?php
-
 	include_once "$PROJECT_ROOT/languages/language_flags.php";
 
 	$WEEK_SECONDS = 604800;
@@ -131,6 +130,33 @@
 			}, $details);
 		}
 
+		/**
+		 * Sorts Community rooms in-place by the given string property.
+		 * @param \CommunityRoom[] $rooms Rooms to sort by given key.
+		 * @param string $key String property of CommunityRoom to sort by.
+		 */
+		public static function sort_rooms_str(array &$rooms, string $key) {
+			usort($rooms, function(\CommunityRoom $a, \CommunityRoom $b) use ($key) {
+				return strcmp(
+					$a->$key,
+					$b->$key
+				);
+			});
+		}
+
+		/**
+		 * Sorts Community rooms in-place by their server's public key.
+		 * @param \CommunityRoom[] $rooms Rooms to sort by server pubkey.
+		 */
+		public static function sort_rooms_by_pubkey(array &$rooms) {
+			usort($rooms, function(\CommunityRoom $a, \CommunityRoom $b) {
+				return strcmp(
+					$a->server->get_pubkey(),
+					$b->server->get_pubkey()
+				);
+			});
+		}
+
 		/**
 		 * Returns array of staff Session IDs.
 		 * @return string[]

sites/index.php

@@ -16,6 +16,10 @@
 	// List all rooms from the cached servers.
 	$rooms = CommunityServer::enumerate_rooms($servers);
 
+	// Sort rooms by name and then host.
+	CommunityRoom::sort_rooms_str($rooms, 'name');
+	CommunityRoom::sort_rooms_by_pubkey($rooms);
+
 	// Set the last-updated timestamp
 	// to the time the server data file was last modified.
 	$timestamp = filemtime($ROOMS_FILE);