jquery - PHP: Possible to automatically get all POSTed data And Multiple checkbox unchecked?

Question

Hello friends i have a trouble.

I'm trying to use this code to get dynamically, variables and values of a form, but there is a countless number checkbox, which may or not marked, I would like to know how can I get an off or "0" in case not this a checkbox labeled, these data have been used .ajax and data:

Short Example of checkboxes:

<input name="p-sis-0110-1" type="checkbox">
<input name="p-sis-0110-2" type="checkbox">
<input name="p-sis-0110-3" type="checkbox">
<input name="p-sis-0110-4" type="checkbox">
<input name="p-sis-0110-5" type="checkbox">
<input name="p-sis-0110-6" type="checkbox">

or

<input name="input[]" type="checkbox">
<input name="input[]" type="checkbox">
<input name="input[]" type="checkbox">
<input name="input[]" type="checkbox">
<input name="input[]" type="checkbox">
<input name="input[]" type="checkbox">
<input name="input[]" type="checkbox">

Ajax:

.$("#formarea").serialize()

PHP:

foreach ($_POST as $key => $value){
    echo "Field ".htmlspecialchars($key)." is ".htmlspecialchars($value)."<br>"
}

I appreciate any help to solve this little dilemma.

Answer 1

Only "successful" controls are submitted. An unchecked checkbox or radio button is not "successful".

You need to declare a default value with a hidden input. Make sure the hidden input comes before the checkbox so if the checkbox is checked it will override the default hidden input since the names are the same:

<input name="p-sis-0110-1" type="hidden" value="0">
<input name="p-sis-0110-1" type="checkbox" value="1">

To use an array you need to explicitly define the indexes so they are the same:

<input name="input[0]" type="hidden" value="0">
<input name="input[0]" type="checkbox" value="1">