diff --git a/framework/caching/FileCache.php b/framework/caching/FileCache.php
index cc6092b3f2..bdca7789b1 100644
--- a/framework/caching/FileCache.php
+++ b/framework/caching/FileCache.php
@@ -159,10 +159,7 @@ class FileCache extends Cache
         }
 
         $message = "Unable to write cache file '{$cacheFile}'";
-
-        if ($error = error_get_last()) {
-            $message .= ": {$error['message']}";
-        }
+        ($error = error_get_last()) and $message .= ": {$error['message']}";
 
         Yii::warning($message, __METHOD__);
 
@@ -271,20 +268,22 @@ class FileCache extends Cache
                     continue;
                 }
                 $fullPath = $path . DIRECTORY_SEPARATOR . $file;
+                $message = null;
                 if (is_dir($fullPath)) {
                     $this->gcRecursive($fullPath, $expiredOnly);
                     if (!$expiredOnly) {
                         if (!@rmdir($fullPath)) {
-                            $error = error_get_last();
-                            Yii::warning("Unable to remove directory '{$fullPath}': {$error['message']}", __METHOD__);
+                            $message = "Unable to remove directory '$fullPath'";
+                            ($error = error_get_last()) and $message .= ": {$error['message']}";
                         }
                     }
                 } elseif (!$expiredOnly || $expiredOnly && @filemtime($fullPath) < time()) {
                     if (!@unlink($fullPath)) {
-                        $error = error_get_last();
-                        Yii::warning("Unable to remove file '{$fullPath}': {$error['message']}", __METHOD__);
+                        $message = "Unable to remove file '$fullPath'";
+                        ($error = error_get_last()) and $message .= ": {$error['message']}";
                     }
                 }
+                $message and Yii::warning($message, __METHOD__);
             }
             closedir($handle);
         }
diff --git a/framework/log/FileTarget.php b/framework/log/FileTarget.php
index d4c267e2ed..b68da96562 100644
--- a/framework/log/FileTarget.php
+++ b/framework/log/FileTarget.php
@@ -131,8 +131,9 @@ class FileTarget extends Target
         }
         $writeResult = @fwrite($fp, $text);
         if ($writeResult === false) {
-            $error = error_get_last();
-            throw new LogRuntimeException("Unable to export log through file ({$this->logFile})!: {$error['message']}");
+            $message = "Unable to export log through file ($this->logFile)!";
+            ($error = error_get_last()) and $message .= ": {$error['message']}";
+            throw new LogRuntimeException($message);
         }
         $textSize = strlen($text);
         if ($writeResult < $textSize) {