diff --git a/src/PhpSessionPersistence.php b/src/PhpSessionPersistence.php
index 3657182..42652b7 100644
--- a/src/PhpSessionPersistence.php
+++ b/src/PhpSessionPersistence.php
@@ -31,6 +31,9 @@
 use function sprintf;
 use function time;
 
+use const FILTER_VALIDATE_BOOLEAN;
+use const FILTER_NULL_ON_FAILURE;
+
 /**
  * Session persistence using ext-session.
  *
@@ -119,12 +122,7 @@ public function persistSession(SessionInterface $session, ResponseInterface $res
             return $response;
         }
 
-        $sessionCookie = SetCookie::create(session_name())
-            ->withValue($id)
-            ->withPath(ini_get('session.cookie_path'))
-            ->withDomain(ini_get('session.cookie_domain'))
-            ->withSecure(ini_get('session.cookie_secure'))
-            ->withHttpOnly(ini_get('session.cookie_httponly'));
+        $sessionCookie = $this->createSessionCookie(session_name(), $id);
 
         if ($cookieLifetime = $this->getCookieLifetime($session)) {
             $sessionCookie = $sessionCookie->withExpires(time() + $cookieLifetime);
@@ -182,6 +180,34 @@ private function generateSessionId() : string
         return bin2hex(random_bytes(16));
     }
 
+    /**
+     * Build a SetCookie parsing boolean ini settings
+     *
+     * @param string $name The session name as the cookie name
+     * @param string $id The session id as the cookie value
+     * @return SetCookie
+     */
+    private function createSessionCookie(string $name, string $id) : SetCookie
+    {
+        $secure = filter_var(
+            ini_get('session.cookie_secure'),
+            FILTER_VALIDATE_BOOLEAN,
+            FILTER_NULL_ON_FAILURE
+        );
+        $httpOnly = filter_var(
+            ini_get('session.cookie_httponly'),
+            FILTER_VALIDATE_BOOLEAN,
+            FILTER_NULL_ON_FAILURE
+        );
+
+        return SetCookie::create($name)
+            ->withValue($id)
+            ->withPath(ini_get('session.cookie_path'))
+            ->withDomain(ini_get('session.cookie_domain'))
+            ->withSecure($secure)
+            ->withHttpOnly($httpOnly);
+    }
+
     /**
      * Generate cache http headers for this instance's session cache_limiter and
      * cache_expire values
diff --git a/test/PhpSessionPersistenceTest.php b/test/PhpSessionPersistenceTest.php
index d299641..cd8b84e 100644
--- a/test/PhpSessionPersistenceTest.php
+++ b/test/PhpSessionPersistenceTest.php
@@ -735,4 +735,52 @@ public function testOnlyOneSessionFileIsCreatedIfNoSessionCookiePresentINFirstRe
 
         $this->restoreOriginalSessionIniSettings($ini);
     }
+
+    /**
+     * @dataProvider cookieSettingsProvider
+     */
+    public function testThatSetCookieCorrectlyInterpretsIniSettings(
+        $secureIni,
+        $httpOnlyIni,
+        $expectedSecure,
+        $expectedHttpOnly
+    ) {
+        $ini = $this->applyCustomSessionOptions([
+            'cookie_secure'   => $secureIni,
+            'cookie_httponly' => $httpOnlyIni,
+        ]);
+
+        $persistence = new PhpSessionPersistence();
+
+        $createSessionCookie = new ReflectionMethod($persistence, 'createSessionCookie');
+        $createSessionCookie->setAccessible(true);
+
+        $setCookie = $createSessionCookie->invokeArgs(
+            $persistence,
+            ['SETCOOKIESESSIONID', 'set-cookie-test-value']
+        );
+
+        $this->assertSame($expectedSecure, $setCookie->getSecure());
+        $this->assertSame($expectedHttpOnly, $setCookie->getHttpOnly());
+
+        $this->restoreOriginalSessionIniSettings($ini);
+    }
+
+    public function cookieSettingsProvider()
+    {
+        // obvious input/results data are left (commented out) for reference
+        return [
+            //[false, false, false, false],
+            //[0, 0, false, false],
+            //['0', '0', false, false],
+            //['', '', false, false],
+            ['off', 'off', false, false],
+            ['Off', 'Off', false, false],
+            //[true, true, true, true],
+            //[1, 1, true, true],
+            //['1', '1', true, true],
+            //['on', 'on', true, true],
+            //['On', 'On', true, true],
+        ];
+    }
 }