Online PHP editor | rfc for nlqTP

@ 2017-10-26T14:07:13Z

<?php

function roundup(int $v, int $p2): int
{
    /* purely bitwise way to round up */
    return ($v + $p2 - 1) & ~($p2 - 1);
}

function foreach_chunk(string $s, int $chunk, callable $func): void
{
    /* make sure the chunk length is a power of 2 */
    assert($chunk & ($chunk - 1) === 0);

    /* iterate over each chunk and call the callback */
    array_walk(str_split(str_pad($s, roundup(strlen($s), $chunk), '0', STR_PAD_LEFT), $chunk), $func);
}

function bytesToBits(string $bytestring) {
  $bitstring = '';

  foreach_chunk($bytestring, 4, function (string $chunk) use (&$bitstring) {
    $bitstring .= str_pad(base_convert(unpack('H*', $chunk)[1], 16, 2), strlen($chunk) * 8, '0', STR_PAD_LEFT);
  });

  return $bitstring;
}

function bitsToBytes(string $bitstring) {
  $bytestring = '';
  
  foreach_chunk($bitstring, 32, function(string $chunk) use (&$bytestring) {
    $bytestring .= pack('H*', str_pad(base_convert($chunk, 2, 16), strlen($chunk) / 8, '0', STR_PAD_LEFT));
  });

  return $bytestring;
}

Output for git.master, git.master_jit, rfc.property-hooks

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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