[FX.php List] Populating a checkbox field in FM

[Bob Patin]

I'm frantically trying to finish this project today, and am trying to  
take the values of some checkboxes and put them into a field in  
FileMaker.

I know they need to be on separate lines; so if I have $s1, $s2, and  
$s3, how do I use PHP to put them into a separate value, one line per  
each?

I tried

$val = $s1."\n".$s2."\n".$s3;

But this doesn't send carriage returns; I also tried

$val = $s1."<br>".$s2;

and that didn't work... someone please tell me the obvious... :)

Thanks,

Bob