using a check box with an if statement

[will_1990]

i wish to use a checkbox with this code

 

<?php $one_way             = (isset($_POST['one_way'])) ? $_POST['one_way'] : null;

 

I want to follow after a while statement and say if checkbox is not null execute "query" then do  exactly the same while loop as above. if more code or info is needed dont hesitate to ask. Im just not sure how to structure the if statement.

 

thanks alot

 

 

[premiso]

<?php 
$one_way = (isset($_POST['one_way'])) ? $_POST['one_way'] : null;

if (!is_null($one_way)) {
    //execute query in here.
}
?>