multiple checkbox value in array in php

Question

I have one form which contain product information and one field which have two(2) check box for status(want to post advertise for that particular product or not.)and i have one field which is for "add more" it will clone whole div and also check boxes so i have more then one output but I don't have getting single value.

<div>
     <label>I want to Advertise This Item</label>
     <input type="checkbox" value="1" name="chkyes[]" id="chkyes[]"/>
     Yes
     <input type="checkbox" value="0" name="chkyes[]" id="chkyes[]"/>
     No 
</div>

Above code is for selecting checkbox, and below code which echo value in array but I don't get the value of checkbox.

if(count($_POST)){
    $len = count($_POST['producttitle']);
    for ($i=1; $i < $len; $i++){
        echo $_POST['chkyes'][$i];
    }
}

you can't give id's like chkyes[] give it as chkyes1, chkyes2 — Deepika Janiyani, Jan 06 '14 at 09:27
Where exactly is the form element with name of `producttitle`? — George, Jan 06 '14 at 09:28
Oops, right. I think HTML5 allows these characters in IDs, but the real problem is that he has duplicate IDs. IDs must be unique. — Barmar, Jan 06 '14 at 09:33

score 2 · Answer 1 · answered Jan 06 '14 at 09:28

2

why you dont use foreach?

for eg

if (isset($_POST['chkyes'])) {
    foreach ($_POST['chkyes'] as $value) {
        echo $value;
    }
}

answered Jan 06 '14 at 09:28

MaiKaY

4,422
20
28

score 2 · Answer 2 · answered Jan 06 '14 at 09:57

The first approach:

<input type='checkbox' name='chkyes[1]'>
<input type='checkbox' name='chkyes[2]'>
<input type='checkbox' name='chkyes[3]'>

This way you could access them in PHP with

foreach ($_POST['chkyes'] as $id=>$checked){
   if ($checked =='on')
    //process your id
 }

The second approach:Set value's attributes on checkboxes:

<input type='checkbox' name='chkyes[]' value='1'>
<input type='checkbox' name='chkyes[]' value='2'>
<input type='checkbox' name='chkyes[]' value='3'>

With this you'll receive only checked values:

foreach ($_POST['chkyes'] as $id){
    //process your id
 }

Deepika Janiyani · Answer 3 · 2014-01-06T09:35:37.280

1

Array of input start from an index of 0, and use $_POST['chkyes'] instead of $_POST['producttitle']

 if(count($_POST)){
     $len = count($_POST['chkyes']);
     for ($i=0; $i < $len; $i++){
         echo $_POST['chkyes'][$i];
     }
 }

also you can't give id's like chkyes[] give it as chkyes1, chkyes2

edited Jan 06 '14 at 09:35

answered Jan 06 '14 at 09:29

Deepika Janiyani

1,487
9
17

using characters like `[,]` are valid. problem might be duplication of ids – Milind Anantwar Jan 06 '14 at 09:36
yup i said for id only that it can be an array – Deepika Janiyani Jan 06 '14 at 09:38
You mentioned about `chkyes[]` being invalid. – Milind Anantwar Jan 06 '14 at 09:41
for id, 'you can't give id's like chkyes[]' – Deepika Janiyani Jan 06 '14 at 09:49
if i give id like chkyes1[] and chkyes2[] then also it gives error Undefined offset: 2 and returns 0 as value. – user3164797 Jan 06 '14 at 09:52
@Anamika:You can... see this http://stackoverflow.com/questions/70579/what-are-valid-values-for-the-id-attribute-in-html – Milind Anantwar Jan 06 '14 at 09:54
@user3164797 it should be id like chkyes1 and chkyes2 and use $_POST['chkyes'] for getting len variable – Deepika Janiyani Jan 06 '14 at 10:01
still getting Undefined offset: – user3164797 Jan 06 '14 at 10:19
I want to Advertise This Item Yes No code page:- – user3164797 Jan 06 '14 at 10:45

score 1 · Answer 4 · answered Jan 06 '14 at 09:31

Try Below code

<?php
if($_POST['submit'] == 'submit'){
    $len = count($_POST['chkyes']);
    for ($i=0; $i < $len; $i++){
        echo $_POST['chkyes'][$i];
    }
}
?>


<form name="test" method="POST">
<div>
     <label>I want to Advertise This Item</label>
     <input type="checkbox" value="1" name="chkyes[]" id="chkyes[]"/>
     Yes
     <input type="checkbox" value="0" name="chkyes[]" id="chkyes[]"/>
     No 
</div>
<input type="submit" name="submit" value="submit">
</form>

score 1 · Answer 5 · answered Jan 06 '14 at 09:37

Only checkboxes that are checked are submitted in the form. They'll be collected in an array $_POST['chkyes'], but the indexes won't be the same as corresponding text inputs. You need to process them with their own foreach loop, not the same loop as for other inputs.

For what you're doing, why aren't you using radio buttons or a single checkbox? What if the user checks both Yes and No?

multiple checkbox value in array in php

5 Answers5