array.php

 <?php 

      $output = array();

            if(isset($med_sciences) && $med_sciences[0]=="Y"){
                
                 array_push($output , 'Medical Sciences');
            }

           if(isset($food_ag) && $food_ag[0]=="Y"){
                
                 array_push($output , 'Food & Agriculture');
            }

            if(isset($engineering) && $engineering[0]=="Y"){
                
                array_push($output , 'Engineering & Materials');
            }

            if(isset($energy) && $energy[0]=="Y"){
               
                
                array_push($output , 'Energy & Environment');
            }

             if(isset($it) && $it[0]=="Y"){

              
                array_push($output , 'IT & Ed Tech');
            }

           
        
       
         
            echo '<span class="cat">';
            ob_start();
          
            foreach($output as $result)
            {
               echo $result.', ';
            }
            $output = ob_get_clean();

            echo rtrim($output, ', ');

            echo '</span>';
           
             
        ?>