Form Validation : Checkbox input through PHP [duplicate]

Question

Hey I just wanted to know how do we check if a user has checked a checkbox or not in a form after hitting the submit buttom . I am using PHP so any help regarding that would be really appreciated . Thanks

Can you show us your effort?

Mohit Mehta
– Mohit Mehta

2013-03-20 10:08:03 +00:00
Commented Mar 20, 2013 at 10:08 — Mohit Mehta
– Mohit Mehta, Commented Mar 20, 2013 at 10:08
can you post your checkbox code here?

Dead Man
– Dead Man

2013-03-20 10:08:05 +00:00
Commented Mar 20, 2013 at 10:08 — Dead Man
– Dead Man, Commented Mar 20, 2013 at 10:08
<input name="agree" type="checkbox" value="Check" />

Abhinav
– Abhinav

2013-03-20 10:15:34 +00:00
Commented Mar 20, 2013 at 10:15 — Abhinav
– Abhinav, Commented Mar 20, 2013 at 10:15
do some basic search before asking to stack..

Shiju Shaji
– Shiju Shaji

2013-03-20 11:03:19 +00:00
Commented Mar 20, 2013 at 11:03 — Shiju Shaji
– Shiju Shaji, Commented Mar 20, 2013 at 11:03

Dead Man · Accepted Answer · 2013-03-20 10:09:38Z

5

You can do it like this:

if(isset($_POST['checkbox_name']) && $_POST['checkbox_name']!="")
{
    echo 'checkbox is checked'; 
}

answered Mar 20, 2013 at 10:09

Dead Man

2,95125 silver badges37 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Abhinav Over a year ago

thanks I was using 'name' of the checkbox instead the 'value' .

Abhinav Over a year ago

Hey I have a little more doubt now , whats the difference between using a 'name' and 'value' in an input checkbox ?

Dead Man Over a year ago

name and value are totally different attributes of a checkbox. name is used to fetch the value of element, and value is the value of that element.

Mohit Mehta · Accepted Answer · 2013-03-20 10:10:59Z

3

<input type='checkbox' name='boxname' value='1' />

<?php
    if(isset($_POST['boxname'])
    {
        echo "check box is checked";
    }
?>

answered Mar 20, 2013 at 10:10

Mohit Mehta

1,28512 silver badges23 bronze badges

Comments

advermark · Accepted Answer · 2013-03-20 10:14:28Z

1

HTML

<input type='checkbox' name='theName' value='itsChecked'>

PHP

if($_POST['theName'] == 'itsChecked'){}

edited Mar 20, 2013 at 10:14

answered Mar 20, 2013 at 10:08

advermark

2311 silver badge10 bronze badges

3 Comments

asprin Over a year ago

Where's the name attribute?

advermark Over a year ago

Good point.. Input needs name='theName' & If statement will be $_POST['theName'] instead.

asprin Over a year ago

It's better to use isset first and then compare == to avoid warnings

Collectives™ on Stack Overflow

Form Validation : Checkbox input through PHP [duplicate]

3 Answers 3

3 Comments

Comments

3 Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

3 Comments

Comments

3 Comments

Linked

Related