Execute function for each element checked - php

Question

I have a couple of checkboxes and I want to execute a function for each of the elements marked as checked. How can I do this?
In my particular case, I think this might be a little bit easier, because the checkboxes are constructed like this:
$get_json_values=json_decode($json_string,true);
foreach ($get_json_values as $key=>$getlikes) {
if($getlikes['type']=='like') {
?>
<div>
<input type="checkbox" name="<?php echo $getlikes['name'] ?>" value="<?php echo $getlikes['id'] ?>" checked>
<a href="https://www.facebook.com/<?php echo $getlikes['id']; ?>" target="_top">
<?php echo $getlikes['name'] ?> </a>
</div>
<?php
}}
?>
So I think it should look like this:
function doIfChecked()
{
foreach ($get_json_values as $key=>$getlikes) {
if($getlikes['type']=='like'&&<sequence that checks if checkbox is checked>)
{//do stuff}
}
}
Can anyone please help?
Thanks to Julian H. Lam, I found a good answer, but my problem is that for each of the elements , I need to do a request to the server (like a page on facebook), but I can't put any php inside javascript.
So, how could I do that since php is not allowed inside js?

Answer 1

Using javascript:
var checkboxes = document.querySelectorAll('input[type="checkbox"]'),
numCheckboxes = checkboxes.length,
x;
for(x=0;x<numCheckboxes;x++) {
if (checkboxes[x].checked === true) {
// add code here to be done for each checked element
// you can refer to the checked element by calling "checkboxes[x]"
}
}