Merge pull request #495 in ZP/z-push from...

Merge pull request #495 in ZP/z-push from bugfix/ZP-1182-logauthfail-doesn-t-log-into-z-push-error.log to develop

* commit '159c6ba7':
  ZP-1182 Check all loglevels bitwise.
  ZP-1182 Also log WARN messages into the error log.
  ZP-1182 Remove logging into the error log as messages for the error log file are also written by afterlog().

src/lib/log/filelog.php

@@ -95,10 +95,6 @@ class FileLog extends Log {
     protected function Write($loglevel, $message) {
         $data = $this->buildLogString($loglevel, $message) . PHP_EOL;
         @file_put_contents(LOGFILE, $data, FILE_APPEND);
-
-        if (($loglevel & LOGLEVEL_FATAL) || ($loglevel & LOGLEVEL_ERROR)) {
-            @file_put_contents(LOGERRORFILE, $data, FILE_APPEND);
-        }
     }
 
     /**
@@ -122,7 +118,7 @@ class FileLog extends Log {
      * @return void
      */
     protected function afterLog($loglevel, $message) {
-        if (($loglevel & LOGLEVEL_FATAL) || ($loglevel & LOGLEVEL_ERROR)) {
+        if ($loglevel & (LOGLEVEL_FATAL | LOGLEVEL_ERROR | LOGLEVEL_WARN)) {
             $data = $this->buildLogString($loglevel, $message) . PHP_EOL;
             @file_put_contents(LOGERRORFILE, $data, FILE_APPEND);
         }