HTMLy running entirely on the client side using PHP-WASM

[andrigamerita]

Hi everyone... today I've done something very cursed: I made HTMLy run entirely locally inside the browser, without any web server, using the php-wasm project!

It's very experimental at the moment, mainly because the php-cgi-wasm runtime itself is in alpha state, and there are a few issues, ranging from the long startup time (it's about 60 MB of data that the app downloads and unpacks in the browser) to the fact that sometimes there are random crashes (see the log below for an example), but it's a nice way to test the CMS.

500: Internal Server Error.
================================================================================
Stacktrace:

TypeError: Failed to execute 'append' on 'Headers': Invalid name

at https://htmly-wasm-386821.gitlab.io/php-wasm/cgi-worker.js:1:797492

at l.request (https://htmly-wasm-386821.gitlab.io/php-wasm/cgi-worker.js:1:797641)
STDERR:
================================================================================
STDOUT:




Warning:  PHP Startup: Invalid library (maybe not a PHP library) 'php8.3-zlib.so' in Unknown on line 0





Warning:  PHP Startup: Invalid library (maybe not a PHP library) 'php8.3-zip.so' in Unknown on line 0





Warning:  PHP Startup: Invalid library (maybe not a PHP library) 'php8.3-gd.so' in Unknown on line 0





Warning:  PHP Startup: Invalid library (maybe not a PHP library) 'php8.3-intl.so' in Unknown on line 0





Warning:  PHP Startup: Invalid library (maybe not a PHP library) 'php8.3-mbstring.so' in Unknown on line 0





Warning:  PHP Startup: Invalid library (maybe not a PHP library) 'php8.3-sqlite.so' in Unknown on line 0





Warning:  PHP Startup: Invalid library (maybe not a PHP library) 'php8.3-xml.so' in Unknown on line 0





Warning:  PHP Startup: Invalid library (maybe not a PHP library) 'php8.3-simplexml.so' in Unknown on line 0


X-Powered-By: PHP/8.3.11

Expires: Thu, 19 Nov 1981 08:52:00 GMT

Cache-Control: no-store, no-cache, must-revalidate

Pragma: no-cache

Content-type: text/html; charset=UTF-8


Warning:  Undefined array key "/php-wasm/cgi-bin/drupal/" in /persist/drupal-7.95/system/htmly.php on line 1947



Warning:  Trying to access array offset on null in /persist/drupal-7.95/system/htmly.php on line 1947



Warning:  Cannot modify header information - headers already sent by (output started at /persist/drupal-7.95/system/htmly.php:1947) in /persist/drupal-7.95/system/htmly.php on line 1977

================================================================================

I will write a post on my blog in the coming days to explain how everything works, and maybe how the current issues can be fixed and this idea made production-ready for more practical uses, but it's already available for those who just want to test and experiment:

• Try it: https://htmly-wasm-386821.gitlab.io/
• Source code: https://gitlab.com/octospacc/htmly-wasm