#halt

halt.php

<?
function words($string)
{
  return preg_split('/ /', $string, -1, PREG_SPLIT_NO_EMPTY);
}

function halt(/* [status], [headers], [body] */)
{
    $args = func_get_args();

    $states = words('status headers body');
    while (!empty($args) && !empty($states)) {

        $state = current($states);
        if ($state === 'status' && is_int(current($args))
            || $state === 'headers' && is_array(current($args))
            || $state === 'body') {

            $$state = array_shift($args);
        }

        array_shift($states);
    }

    echo json_encode(func_get_args()) . "\n";
    echo json_encode(compact('status', 'headers', 'body')) . "\n\n";
}

halt();
// => []

halt(201);
// => {"status":201}

halt("Done");
// => {"body":"Done"}

halt(100, "Continue");
// => {"status":100,"body":"Continue"}

halt(301, array('Location'=>'y'));
// => {"status":301,"headers":{"Location":"y"}}

halt(302, "Found");
// => {"status":302,"body":"Found"}

halt(303, array('Location'=>'y'), 'See other');
// => {"status":303,"headers":{"Location":"y"},"body":"See other"}