What do you expect would be output by this script?

switch_continue.php

<?php

// some math operations
$instructions = array(
  array('*', 2, 4),
  array('/', 2, 4),
  array('/', 2, 0),
);

// compute
foreach ($instructions as $instr) {
  list($operation, $operand1, $operand2) = $instr;

  switch ($operation) {
  case '*':
    $result = $operand1 * $operand2;
    break;
  case '/':
    // prevent divide error
    if ($operand2 == 0) {
      echo "ERROR: Can't divide by 0\n";
      continue;
    }

    $result = $operand1 / $operand2;
    break;
  }

  printf("RESULT: %d\n", $result);
}

Spoiler: https://gist.github.com/loganlinn/5902991/bf222507ed96ffb0ea39cba2b32f3f483fb6d031