ZP-1182 Check all loglevels bitwise.

Released under the Affero GNU General Public License (AGPL) version 3.

src/lib/log/filelog.php

@@ -118,7 +118,7 @@ class FileLog extends Log {
      * @return void
      */
     protected function afterLog($loglevel, $message) {
-        if (($loglevel & LOGLEVEL_FATAL) || ($loglevel & LOGLEVEL_ERROR) || ($loglevel & LOGLEVEL_WARN)) {
+        if ($loglevel & (LOGLEVEL_FATAL | LOGLEVEL_ERROR | LOGLEVEL_WARN)) {
             $data = $this->buildLogString($loglevel, $message) . PHP_EOL;
             @file_put_contents(LOGERRORFILE, $data, FILE_APPEND);
         }