Sand Fox (old posts, page 5)

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• PHP 5: if (\false)

  Jan 7, 2022 • Share

  I was wondering why the typical class alias boilerplate code uses this weird backslash in if (\false) like here for example.

  It turns out this code will wish you a happy debugging in PHP 5.3-5.6:

  <?php
  
  namespace ns;
  
  define('ns\\false', 1);
  
  if (false) {
      echo "Happy Debugging", PHP_EOL;
  }
  

  Not a very useful knowledge now but an interesting history fact.

  Category: PHP • Tags: php 5, til

• PHP 8.1 Syntax Showcase

  Nov 30, 2021 • Share

  PHP 8.1 was released when I was suffering from COVID so I'm a bit late.

  <?php
  
  enum Status
  {
      case OK;
      case Error;
  }
  
  #[SomeAttr(new SomeNestedAttr())]
  class TestTest
  {
      public function __construct(
          public readonly Status $status = Status::OK,
          private Logger $logger = new FileLogger(perm: 0o644),
      ) {}
  
      public function process(Iterator&Countable $value)
      {
          if (count($value) === 0) {
              $this->error();
          }
      }
  
      public function error(): never
      {
          $this->logger->error('Error!');
          exit;
      }
  }
  
  $test = new TestTest();
  
  $arr1 = ['a' => new ArrayObject()];
  $arr2 = ['b' => new ArrayIterator()];
  
  $result = array_map($test->process(...), [...$arr1, ...$arr2]);
  

  Category: PHP • Tags: php 8.1

• Torrent File 2.2

  Nov 30, 2021 • Share

  The torrent file library got its biggest update. Versions 2.2 / 3.0 added support for:

  • BEP-5: DHT nodes list

  • BEP-17: HTTP seed urls

  • BEP-19: WebSeed urls

  • BEP-47: sha1 sums, executable files, symlinks, padding

  • Big cleanup to support torrent v2 metadata (BEP-52) in 2.3 / 3.1

  Category: PHP • Tags: torrent

• CVE-2021-41106

  Sep 30, 2021 • Share

  Nice, now I have my first CVE :D The one I've found, not the one I've created :D

  • GitHub: https://github.com/advisories/GHSA-7322-jrq4-x5hf

  • CVE: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41106

  • NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-41106

  If you're using lcobucci/jwt, please upgrade.

  Category: PHP • Tags: jwt, security

• IsResource

  Sep 28, 2021 • Share

  Inspired by a recent discussion in the PHP Internals, I decided to provide a userland solution. Check this:

  <?php
  
  $hash = hash_init('md5');
  
  // vanilla functions:
  is_resource($hash); // true in PHP <= 7.1, false in PHP >= 7.2
  get_resource_type($hash); // "Hash Context" in PHP <= 7.1, various errors otherwise
  
  // library functions:
  \Arokettu\IsResource\is_resource($hash); // true
  \Arokettu\IsResource\get_resource_type($hash); // "Hash Context"
  

  Get it on my dev portal: https://sandfox.dev/php/is-resource.html

  Category: PHP • Tags: is_resource, php 8, php 8.1

• sass-hsv

  Aug 28, 2021 • Share

  I haven't found a nice small helper for HSV/HSB color format like the one LESS has so I published my first npm package.

  https://sandfox.dev/js/sass-hsv.html

  Category: Misc • Tags: hsb, hsv, sass

• TOML vs YAML

  Aug 10, 2021 • Share

  So... Let's compare.

  Read more…

  Category: Misc • Tags: configuration, toml, yaml

• Open Letter in Support of Richard Stallman

  Mar 24, 2021 • Share

  https://rms-support-letter.github.io

  Please even if you do not agree with him politically but still don't like that raging mobs decide for others, sign the letter here: https://github.com/rms-support-letter/rms-support-letter.github.io/pulls

  Category: Misc • Tags: fsf, politics, rms, sjw

• Pseudolocale Lib for PHP

  Jan 27, 2021 • Share

  I haven't found a good standalone pseudolocalization library for PHP so I wrote my own.

  https://sandfox.dev/php/pseudolocale.html

  Or if you're using Symfony Components or you don't mind using huge libraries for simple tasks, there is one good alternative: PseudoLocalizationTranslator in the Symfony Translation Component since version 5.2.

  Category: PHP • Tags: i18n, php, pseudolocale

• Trash Directory for Partition

  Jan 8, 2021 • Share

  If you have a separate user writable drive mounted, you may have encountered the same problem I had. If your DE cannot create .Trash-$uid, most DEs will not delete files to the trash at all and KDE will copy deleted files to your home partition. I find both behaviors frustrating.

  The solution is rather simple: look at the spec and create the trash directory manually.

  # for example, your drive is mounted to /media/external
  # go to the drive root
  cd /media/external
  
  # create root owned .Trash
  sudo mkdir .Trash
  
  # make it world writable with a sticky bit
  sudo chmod 1777 .Trash
  

  Now delete some file from that partition and check that is lands to .Trash/$uid/files. Your trash directory now works properly.

  Category: Linux • Tags: trash

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