Parse error: syntax error, unexpected 'id' (T_STRING), expecting ']' in C:\xampp\

Hello fellow PHP Enthusiasts if you could help me with this I would apprieciate it very much.

Error:

Parse error: syntax error, unexpected 'id' (T_STRING), expecting ']' in C:\xampp\

Code:

  <?php
          
          if(!empty($_POST['id'])){
         $id = $_POST['id'];          
          $arf=getStatistics($id);
 }
            ?>