Replace the last comma with an & sign

Question

I have searched everywhere but can\'t find a solution that works for me.

I have the following:

$bedroom_array = array($studio, $one_bed, $two_bed, $t         


        

Answer 1

$bedroom_list = implode(", ", array_filter($bedroom_array));

$vars =  $bedroom_list;

$last = strrchr($vars,",");

$last_ = str_replace(",","&",$last);

echo str_replace("$last","$last_",$vars);