Do an action by bit

action-by-bit.php

<?php

function actionByBit($actions, $dec, $bits)
{
  for($i = 0, $count = count($actions); $bits > 0; $i++)
    if($dec & 1 << --$bits && $i < $count)
      $actions[$i]();
}

$hex     = '70 0C 00 00';
$dec     = hexdec($hex);
$bits    = 32;
$actions =
[
  function(){ echo 'NOALARM'.PHP_EOL; },
  function(){ echo 'INACTIVE'.PHP_EOL; },
  function(){ echo 'LOSS_OF_SIGNAL'.PHP_EOL; },
  function(){ echo 'LOSS_OF_FRAME'.PHP_EOL; },
  function(){ echo 'DRIFT_OF_WINDOW'.PHP_EOL; },
  function(){ echo 'SIGNAL_FAIL'.PHP_EOL; },
  function(){ echo 'SIGNAL_DEGRADE'.PHP_EOL; },
  function(){ echo 'LOSS_OF_GEM_CHAN_DELIN'.PHP_EOL; },
  function(){ echo 'REMOTE_DEFECT'.PHP_EOL; },
  function(){ echo 'TRANSMITTER_FAILURE'.PHP_EOL; },
  function(){ echo 'START_UP_FAILURE'.PHP_EOL; },
  function(){ echo 'LOSS_OF_ACK'.PHP_EOL; },
  function(){ echo 'DYING_GASP'.PHP_EOL; },
  function(){ echo 'LOSS_OF_PLOAM_SYNC'.PHP_EOL; },
  function(){ echo 'MESSAGE_ERROR'.PHP_EOL; },
  function(){ echo 'PHYS_EQUIP_ERROR'.PHP_EOL; },
  function(){ echo 'BIT_16_NOT_USED'.PHP_EOL; },
  function(){ echo 'BIT_17_NOT_USED'.PHP_EOL; },
  function(){ echo 'EXCESSIVE_BIP_ERRORS_ONU_DISABLED'.PHP_EOL; },
  function(){ echo 'EXCESSIVE_BIP_ERRORS_ONU_NOT_DISABLED'.PHP_EOL; },
  function(){ echo 'US_RX_POWER_ERROR_ONU_DISABLED'.PHP_EOL; },
  function(){ echo 'US_RX_POWER_ERROR_ONU_NOT_DISABLED'.PHP_EOL; },
  function(){ echo 'ROGUE_ONU'.PHP_EOL; }
];

actionByBit($actions, $dec, $bits);