fixed is_file() call with null (#53)

Calling is_file() with null will throw an error in PHP 8.1
lbuchs · Dec 13, 2021 · 6bc7f0f · 6bc7f0f
1 parent 9c85196
commit 6bc7f0f
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/Attestation/Format/FormatBase.php b/src/Attestation/Format/FormatBase.php
@@ -27,7 +27,7 @@ public function __construct($AttestionObject, AuthenticatorData $authenticatorDa
      */
     public function __destruct() {
         // delete X.509 chain certificate file after use
-        if (\is_file($this->_x5c_tempFile)) {
+        if ($this->_x5c_tempFile && \is_file($this->_x5c_tempFile)) {
             \unlink($this->_x5c_tempFile);
         }
     }
@@ -37,7 +37,7 @@ public function __destruct() {
      * @return string|null
      */
     public function getCertificateChain() {
-        if (\is_file($this->_x5c_tempFile)) {
+        if ($this->_x5c_tempFile && \is_file($this->_x5c_tempFile)) {
             return \file_get_contents($this->_x5c_tempFile);
         }
         return null;