read_registers.php

   <?php
   function read_registers($modbus, $start, $count) {
       $result = $modbus->readMultipleRegisters(1, $start, $count);
       $registers = array();
       for ($i = 0; $i < $count; $i++) {
           $registers[] = $result[$i];
       }
       return $registers;
   }
   ?>