detect unchecked checkbox php

Question

Is there a way to check of a checkbox is unchecked with php? I know you can do a hidden field type in html but what about with just php when the form is submitted? I tried b

Answer 1

Try this:

$checked = $_POST['notif'];
foreach($checked as $ch){
    if($ch == $i){
       /add element to checked set
       $array_checked[]=$ch;
    }
}
for($i=1;$i<6;$i++){
    if(in_array($i,$array_checked)){
        //do for checked
    }else{
        //do for unchecked
    }
}