PHP Radio button form handling

Question

I'm using radio buttons on a form for my website. I am currently trying to write some error checking. If the radio button isn't set when the form is submitted what will $_GET return? I tried echoing it and it appears to be "", but my if statement isn't picking up on it. Is it just not returning a value at all?

if the radio button is not chosen, it's empty, which will result in "". do a: if (empty($_GET['radio_button']) { /* do something */ } else { /* do something */ } — Anuga
– Anuga, Commented Jun 13, 2017 at 14:45

philip mudenyo · Accepted Answer · 2017-06-13 15:05:10Z

2

when radio button is not selected it is not set in the $_GET. Do this

$radion_value = isset($_GET['radio_button_name']) ? true : false;
if($radio_value){
// value is set 
}
else { 
// not set
}

answered Jun 13, 2017 at 15:05

philip mudenyo

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Dhanesh · Accepted Answer · 2017-06-13 14:52:27Z

1

Use form method as POST , using GET method in form submit is not good practice . If you are using POST method, you can check like below

if(!isset($_POST['radio_buttonname'])){
//Your error message set here
}

If you are using GET method.Use below code,

if(!isset($_GET['radio_buttonname'])){
//Your error message set here
}

answered Jun 13, 2017 at 14:52

Dhanesh

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