I'm generating a form with php/mysql. I'm using checkbox that looks like that:
<input type="checkbox" id="my2_3" name="my2_3" />
<input type="checkbox" id="my2_4" name="my2_4" />
<input type="checkbox" id="my2_5" name="my2_5" />
My issue is to retrieve those data (whether the checkbox is checked or not and the id). How can I retrieve that with php without knowing in advance what will be the $_POST[""] to request?
<input type="checkbox" id="my2_3" name="my[]" value="my2_3" />
<input type="checkbox" id="my2_4" name="my[]" value="my2_4" />
<input type="checkbox" id="my2_5" name="my[]" value="my2_5" />
I changed the name attribute to an array,
foreach($_POST['check'] as $value) {
$check_msg .= "Checked: $value\n";
}
You can use foreach($_POST as $key => $value) { ... } to iterate over all POST vars.
It'd be easier for you if you changed the name attribute to create a php array. Check the documentation on creating arrays in HTML form.
Checkboxes are only posted when they are ticked. So you need to inspect $_POST and use isset() to determine whether or not the key you are looking for (the name attribute of a checkbox) is present. If it is, the checkbox was ticked. If not, the checkbox was unticked.
