Handling a lots of selects (dropdown lists) - php

Question

Let's say, that i have users stored in a database, identified by an id (an integer primary key). All the users have a multiple choice attribute, for example privileges on a site (Admin, Member, Administrator etc...). I would like to create a php admin page, where i can select for each user his/her privileges, and all users at one page (or at least more users at one page):
Tom [_privileges_v_]
Ed [_privileges_v_]
Lisa [_privileges_v_]
...
How would it efficient to do?
if i print the dropdowns with the name attribute set as the id of the record, then how could i access them through php?
<select name="12323">
<option value="admin">admin</option>
<option value="user">user</option>
...
</select>
<select name="4323">
<option value="admin">admin</option>
<option value="user">user</option>
...
</select>
Then after i post this form, my $_POST array will contain a $_POST["12323"] and a $_POST["4323"] member.
How could i make something like this, so i could iterate through the $_POST values?
Thanks for any kind of help!

Answer 1

You can output a select box like this
<select name="user_4323">
<option value="admin">admin</option>
<option value="user">user</option>
...
</select>
<input name="otherinp" value=""/>
in case your form has another input.... then in php code you can do
foreach($_POST AS $name=>$value) {
if (strpos($name, "user_")===0){
$userid = str_replace("user_","",$name);
//Do st with userid
}
}
//Work with orther input $_POST['']

Answer 2

Either fetch all the users again and loop through their IDs, then check if there is a post value linked to it, or loop through all the post values.
foreach($_POST AS $name=>$value) {
echo "Selection box with name {$name} has value {$value}";
}