joomla 5.x coding standards - joomla-projects/Joomla-Academy-Onboarding GitHub Wiki

• Follow PSR-12 coding standards for PHP
• Use ESLint standards for JavaScript
• Follow Joomla naming conventions
• Write secure code: validate all inputs, escape all outputs, use prepared statements for database queries

see also: https://developer.joomla.org/coding-standards/html.html