From 6b6703dab1eef265325e4c03f5bda3e8a39d6b63 Mon Sep 17 00:00:00 2001
From: Andrei Furnica <andrei@pefir.ro>
Date: Thu, 2 Aug 2018 15:55:03 +0300
Subject: [PATCH] fix form helper set_radio

---
 system/Helpers/form_helper.php          | 2 +-
 tests/system/Helpers/FormHelperTest.php | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/system/Helpers/form_helper.php b/system/Helpers/form_helper.php
index 384b2d09665d..fcac0adbabe8 100644
--- a/system/Helpers/form_helper.php
+++ b/system/Helpers/form_helper.php
@@ -925,7 +925,7 @@ function set_radio(string $field, string $value = '', bool $default = false): st
 
 		// Unchecked checkbox and radio inputs are not even submitted by browsers ...
 		$result = '';
-		if (!empty($request->getPost()) || !empty(old($field)))
+		if (!empty($input = $request->getPost($field)) || !empty($input = old($field)))
 		{
 			$result = ($input === $value) ? ' checked="checked"' : '';
 		}
diff --git a/tests/system/Helpers/FormHelperTest.php b/tests/system/Helpers/FormHelperTest.php
index daf865189497..867f969be897 100644
--- a/tests/system/Helpers/FormHelperTest.php
+++ b/tests/system/Helpers/FormHelperTest.php
@@ -756,6 +756,10 @@ public function testSetCheckbox()
 	}
 
 	// ------------------------------------------------------------------------
+	/**
+	 * @runInSeparateProcess
+	 * @preserveGlobalState disabled
+	 */
 	public function testSetRadio()
 	{
 		$_SESSION = [
@@ -771,6 +775,10 @@ public function testSetRadio()
 		unset($_SESSION['_ci_old_input']);
 	}
 
+	/**
+	 * @runInSeparateProcess
+	 * @preserveGlobalState disabled
+	 */
 	public function testSetRadioFromPost()
 	{
 		$_POST['bar'] = 'baz';