Hi! I have the following code:

   $a_data = array("a","b","c");
   
   $s_data = "";
   
   foreach($a_data as $data){
       $s_data += $data;
   }
   
   echo $s_data;

I was trying to make $s_data contain "abc" but instead I get a 0. It seems that += cube of types returns an int ignoring that the user is trying to concat an string.