MySQL Update and dynamic multiple selection - php

Question

I have form with a multiple selection, which has MySQL table column names as dynamic options.
<select id="rankRights" size="10" class="form-control" name="rights[]" multiple>
<?php
$sql = $pdo->query("SELECT * FROM ranks");
$rights = $sql->fetch(PDO::FETCH_ASSOC);
foreach($rights as $key => $value) {
if($key != 'Name' || $key != 'Id') {
echo "<option value=\"".$key."\"";
if($result[$key] == '1') {
echo " selected";
}
echo "> " . $key . "</option>";
}
}
?>
</select>
And in table there is user rights as columns and value 1 or 0 (means true or false, example below). There can be any number of columns.
.--------------------------------------------------------------------------------.
| Id | Name | ADMIN | ADMIN_EDITUSER | ADMIN_DELETEUSER | etc |
'--------------------------------------------------------------------------------'
| 1 | Admin | 1 | 1 | 1 | ... |
| 2 | Default | 0 | 0 | 0 | ... |
'--------------------------------------------------------------------------------'
What I want to do is update the values to 1 if user has selected column name in multiple selection and vice versa. How can I post those to the PDO query..
EDIT: So, if I submit the form (for example selected ADMIN and ADMIN_EDITUSER from multiple selection), I'll get POST params like rights[]=ADMIN and rights[]=ADMIN_EDITUSER -> in that case I want to update values of columns ADMIN and ADMIN_EDITUSER to 1, and values of all other columns (options not selected) to 0.
I have read following questions and thinking something, but I don't even now know how to do this.

Answer 1

You could create an array of permission/column names:
$names = array('ADMIN','ADMIN_EDITUSER',...);
Initialize permissions to zero:
$permval = array();
foreach ($names as $name)
$permval[$name] = 0;
Walk the posted values to set related permissions:
foreach ($_REQUEST as $key => $value)
{
if ( isset($permval[$key]) )
$permval[$key] = $value;
}
This at least gives you a defined list of values that you use can use to bind to a set of parameters - one for each permission name. Ensure the list of permission names and a statement preparation are kept in sync.
Any easier alternative may be to create a SQL statement on the fly but you may prefer to use PDO.
NOTE: I did not attempt to execute any of the above; it may contain typos!