From de3dd9a48044cfe56f2e6fe45315bd97f9d7653d Mon Sep 17 00:00:00 2001
From: smiley <codemasher@users.noreply.github.com>
Date: Mon, 25 Jul 2022 11:04:58 +0200
Subject: [PATCH] :octocat: QRCode::isByte(): string "0" fails with empty()

---
 src/QRCode.php       | 2 +-
 tests/QRCodeTest.php | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/QRCode.php b/src/QRCode.php
index 294a20d83..908030feb 100755
--- a/src/QRCode.php
+++ b/src/QRCode.php
@@ -307,7 +307,7 @@ class QRCode{
 	 * a dummy
 	 */
 	public function isByte(string $data):bool{
-		return !empty($data);
+		return $data !== '';
 	}
 
 }
diff --git a/tests/QRCodeTest.php b/tests/QRCodeTest.php
index 523d7eb8c..56936a745 100755
--- a/tests/QRCodeTest.php
+++ b/tests/QRCodeTest.php
@@ -74,6 +74,7 @@ class QRCodeTest extends TestCase{
 	public function testIsByte():void{
 		$this::assertTrue($this->qrcode->isByte("\x01\x02\x03"));
 		$this::assertTrue($this->qrcode->isByte('            ')); // not empty!
+		$this::assertTrue($this->qrcode->isByte('0'));
 
 		$this::assertFalse($this->qrcode->isByte(''));
 	}