How to submit checkbox values with PHP post method

Question

<input type="checkbox" class='form' name="checkbox_1" />

<input type="checkbox" class='form' name="checkbox_2" />

<input type="checkbox" class='form' name="checkbox_3" />

.........

<input type="checkbox" class='form' name="checkbox_10" />

The from has been submitted using the "POST" method. identify, which of the check-boxes and write their numbers in increasing order. Separated all numbers by spaces(not new lines) and do not use any HTML formatting.

For Eg:

If check-boxes 3, 5 and 10 are checked.

Ouput would be:

3 5 10

So, what's the problem here ?

anthares
– anthares

2010-02-22 09:07:30 +00:00
Commented Feb 22, 2010 at 9:07 — anthares
– anthares, Commented Feb 22, 2010 at 9:07
So what is the issue? Detail out what you wish to have.

Kangkan
– Kangkan

2010-02-22 09:08:32 +00:00
Commented Feb 22, 2010 at 9:08 — Kangkan
– Kangkan, Commented Feb 22, 2010 at 9:08
Is there any reason you did not accept the answer here?

tw16
– tw16

2012-03-15 12:41:00 +00:00
Commented Mar 15, 2012 at 12:41 — tw16
– tw16, Commented Mar 15, 2012 at 12:41

vsr · Accepted Answer · 2010-02-22 10:20:27Z

26

Change the markup to something like

<input type="checkbox" class='form' value="1" name="checkbox[]" />
<input type="checkbox" class='form' value="2"  name="checkbox[]" />
<input type="checkbox" class='form' value="3"  name="checkbox[]" />

and to get the values submitted, use a simple loop

foreach($_POST['checkbox'] as $checkbox){
    echo $checkbox . ' ';
}

answered Feb 22, 2010 at 10:20

vsr

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2 Comments

janmoesen Over a year ago

if (isset($_POST['checkbox']) && is_array($_POST['checkbox'])) { echo implode(' ', $_POST['checkbox']); }

Ayush Mishra Over a year ago

How are you using a php variable checkbox[] in simple HTML form?

user2013 · Accepted Answer · 2013-02-11 01:25:12Z

12

HTML Code ::

  <input type="checkbox" name="arrayValue[]"  value="value1" > value1 <br />
  <input type="checkbox" name="arrayValue[]"  value="value2" > value2 <br />
  <input type="checkbox" name="arrayValue[]"  value="value3" > value3 <br />
  <input type="checkbox" name="arrayValue[]"  value="value4" > value4 <br />

php code::

 $checkBoxValue = join(", ", $_POST['arrayValue']);  // here first (,) is user-define
                                                   // means, you can change it whatever
                                                // you want, even if it can be (space) or others

now you get the whole value of 'checkbox' in one variable

answered Feb 11, 2013 at 1:25

user2013

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1 Comment

T.C Over a year ago

Help me a great deal! I was trying to send the checkbox array in a email $message on submit. With the accepted answer it would only read the last value and not all of them. This answer worked perfectly, and I think should be the correct answer! Thanks!

cletus · Accepted Answer · 2010-02-22 09:08:29Z

5

Iterate over the $_POST array and use preg_match() to pull out the number if it starts with "checkbox_":

$checked = array();
foreach ($_POST as $k => $v) {
  if (preg_match('|^checkbox_(\d+)$!', $k, $matches) {
    $checked[] = $matches[1];
  }
}
echo implode(' ', $matches);

answered Feb 22, 2010 at 9:08

cletus

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1 Comment

azkotoki Over a year ago

What vsr said seems more appropiate, this way you don't have to search for a field using regexes.

sth · Accepted Answer · 2011-01-28 23:58:46Z

4

<?php
$checked = array();

foreach ($_POST as $k => $v) {
$subject = $k;
$pattern = '/^checkbox_(\d+)$/';
  if (preg_match($pattern, $subject, $matches)) 
  {
    $checked[] = $matches[1];
  }
}

asort($checked);

foreach ($checked as $key=>$value)
echo $value .' ';
?>

edited Jan 28, 2011 at 23:58

sth

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answered Jan 28, 2011 at 23:08

Rima

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Comments

Sashi · Accepted Answer · 2013-01-12 19:53:02Z

For your Each Checkbox value retrieval you can use below method to get values from checkbox are checked or not....

In My Form Page (Monday to Sunday)

 <input type="checkbox" name="checked[]" class="onoffswitch-checkbox" id="mononoffswitch" value="Mon" checked>

In My PHP Code

function IsChecked($chkname,$value)
{
    if(!empty($_POST[$chkname]))
    {
        foreach($_POST[$chkname] as $chkval)
        {
            if($chkval == $value)
            {
                return true;
            }
        }
    }
    return false;
}

if(IsChecked('checked','Mon'))
{
    $checkedMon = "Y";

}else {
    $checkedMon = "N";

}

if(IsChecked('checked','Tue'))
{
    $checkedTue = "Y";

}else {
    $checkedTue = "N";

}

if(IsChecked('checked','Wed'))
{
    $checkedWed = "Y";

}else {
    $checkedWed = "N";

}

if(IsChecked('checked','Thur'))
{
    $checkedThur = "Y";

}else {
    $checkedThur = "N";

}

if(IsChecked('checked','Fri'))
{
    $checkedFri = "Y";

}else {
    $checkedFri = "N";

}

if(IsChecked('checked','Sat'))
{
    $checkedSat = "Y";

}else {
    $checkedSat = "N";

}

if(IsChecked('checked','Sun'))
{
    $checkedSun = "Y";

}else {
    $checkedSun = "N";

}

Now you can get these variable values and can use in to your Insert Into statement ...

Like this

$addweekdays = mysqli_query($conn, "INSERT INTO weekdays(id,monday,tuesday,wednesday,thursday,friday,saturday,sunday) VALUES('$Id', '$checkedMon', '$checkedTue', '$checkedWed', '$checkedThur','$checkedFri','$checkedSat','$checkedSun')") ...

jeevesh kumar · Accepted Answer · 2013-03-31 07:51:12Z

0

$checked = array();

foreach ($_POST as $k => $v) {
$subject = $k;
$pattern = '/^checkbox_(\d+)$/';
  if (preg_match($pattern, $subject, $matches)) 
  {
    $checked[] = $matches[1];
  }
}

asort($checked);

foreach ($checked as $key=>$value)
echo $value .' ';

answered Mar 31, 2013 at 7:51

jeevesh kumar

696 bronze badges

Comments

Dmitriy · Accepted Answer · 2017-12-18 12:51:30Z

0

take an array for name of your checkbox as name="checkbox[]" and use same name for all your checkbox. After submitting your form receive the values of checked checkbox by using following code:

<?php
$chk="";
foreach($_POST['checkbox'] as $checkbox)
{
$chk=$chk.$checkbox;
}
echo $chk;
?>

edited Dec 18, 2017 at 12:51

Dmitriy

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answered Dec 18, 2017 at 12:29

Shashank Mishra

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