Symfony standards — start here

Short on purpose. Detect the project, apply the five rules, load the skill that matches the work.

Step 0 — read the project before writing to it

Never assume versions or conventions. Once per session:

php -v | head -1
php -r '$l=json_decode(file_get_contents("composer.lock"),true);
foreach(array_merge($l["packages"],$l["packages-dev"]??[]) as $p)
  if(preg_match("#^(symfony/(framework-bundle|serializer|form|security-bundle|object-mapper|messenger|scheduler|lock|rate-limiter|asset-mapper|ux-live-component)|doctrine/orm|doctrine/doctrine-fixtures-bundle|phpunit/phpunit|twig/twig)$#",$p["name"]))
    echo str_pad($p["name"],40)." ".$p["version"]."\n";'
ls src/ config/packages/

What it tells you: