how to return value of 0 when no radio button is selected in php

Question

I am working on online exam system in the answer sheet i have RadioButton I have four radio buttons for each question and i want to return the value of 0 when none of them are selected

this may hlep - http://stackoverflow.com/questions/14747803/how-to-send-radio-button-value-in-php — Caffeinated, Sep 14 '14 at 23:13
If none of them are selected, the radio button won't be accessible in the `POST` superglobal, you could check in php if it is set when processing otherwise mark it as `0`. — Darren, Sep 14 '14 at 23:15

J-Dizzle · Accepted Answer · 2014-09-14T23:20:40.700

0

<?php echo isset($_REQUEST['this_button']) ? $_REQUEST['this_button'] : '0' ?>

this will set it to 0 if nothing is selected

There's also this interesting read about whether you should have a value in a radio button preselected or not. So consider having a hidden radiobutton element whose value is 0 and is preselected

edited Sep 14 '14 at 23:20

answered Sep 14 '14 at 23:14

J-Dizzle

3,176
6
31
49

score 0 · Answer 2 · edited Sep 14 '14 at 23:22

0

You need to have five RadioButtons, one of them should have the value of 0 and should be invisible. That should be selected on default.

edited Sep 14 '14 at 23:22

Darren

13,050
4
41
79

answered Sep 14 '14 at 23:20

Lajos Arpad

64,414
37
100
175

If this solved the problem, then you might accept the answer. – Lajos Arpad Sep 15 '14 at 00:41

how to return value of 0 when no radio button is selected in php

2 Answers2