Continued a bit:

- converted some else if to elseif (only PHP)
- converted some space -> tab (intending)

Signed-off-by: Roland Häder <roland@mxchange.org>

mod/pubsubhubbub.php

@@ -32,7 +32,7 @@ function pubsubhubbub_init(App $a) {
 		// check for valid hub_mode
 		if ($hub_mode === 'subscribe') {
 			$subscribe = 1;
-		} else if ($hub_mode === 'unsubscribe') {
+		} elseif ($hub_mode === 'unsubscribe') {
 			$subscribe = 0;
 		} else {
 			logger("pubsubhubbub: invalid hub_mode=$hub_mode, ignoring.");