Update bug-13566.php

Author: staabm

tests/PHPStan/Rules/Comparison/data/bug-13566.php

@@ -22,6 +22,46 @@ public function test(): void
 	}
 }
 
+class ReturnViaInt
+{
+	/** @return ($exit is 1 ? never : void) */
+	public static function notFound(int $exit = 1): void
+	{
+		header('HTTP/1.1 404 Not Found', true, 404);
+
+		if ($exit == 1) {
+			echo '404 Not Found';
+			exit;
+		}
+	}
+
+	public function test(): void
+	{
+		// send 404 header
+		self::notFound(0);
+	}
+}
+
+class ReturnViaIntNonNative
+{
+	/** @return ($exit is 1 ? never : void) */
+	public static function notFound(int $exit = 1)
+	{
+		header('HTTP/1.1 404 Not Found', true, 404);
+
+		if ($exit == 1) {
+			echo '404 Not Found';
+			exit;
+		}
+	}
+
+	public function test(): void
+	{
+		// send 404 header
+		self::notFound(0);
+	}
+}
+
 class ReturnsMaybeNever
 {
 	/** @return ($exit is true ? never : 1) */