Bug: set_radio() in Form Helper does not work when radio button value equals "0"

[joshdentremont]

If your radio button has the value "0" the set_radio() function will not output "checked='checked'" if that value had been clicked.

I believe this is because empty("0") returns true in the line at

CodeIgniter4/system/Helpers/form_helper.php

Line 894 in 54d370f

if (! empty($input = $request->getPost($field)) || ! empty($input = old($field)))

If you add <input type="radio" name="myradio" value="0" <?php echo set_radio('myradio', '0'); ?> /> to a form you can see that it will not stay checked on submission.

[MGatner]

You’re very right! Should be a quick fix plus a new test case. Thanks for reporting.

[musmanikram]

@MGatner will look into this. Did something similar in this PR

[musmanikram]

@MGatner @joshdentremont PR is there. Same issue was in checkbox also. Fixed that too :)