PHP: How to put a variable in an array?

[antescara]

Just a quick newbie PHP syntax question.I have a variable, let's call it \[code\]$tabs\[/code\] which always contains a string of numbers separated by commas, like so: \[code\]24,35,43,21\[/code\]I also have a variable that's an array:\[code\]$args = array('post_type' => 'page', 'post__in' => array(27,19,29), 'order' => 'ASC');\[/code\]That's of course WordPress. What I need to do, is place the content of the \[code\]$tabs\[/code\] variable (numbers) where the numbers inside the array are. I'm rather new to PHP, only understand how to modify some things, but this I can't figure out, no idea how the syntax for it should go.Anyone able to help? Thanks.