Enhanced three admin modules with SLAED coding standards and modern PHP practices: admin/modules/fields.php:

• String concatenation without spaces: 'text'.$var (SLAED standard)
• Opening brace on same line: function name(): type {
• Consistent single quotes throughout
• Improved code readability and maintainability

admin/modules/groups.php:

• String concatenation formatting aligned with SLAED standards
• All concatenations updated: removed spaces around . operator
• Consistent code style throughout module
• Better visual consistency

admin/modules/messages.php:

• Modern input validation with getVar() helper
• Replaced isset($_POST) with getVar('post', 'key', 'type')
• Added proper type validation for all user inputs
• String concatenation formatting updated
• Security improvements through proper input filtering
• Types: 'num', 'title', 'text', 'var' for different input types

config/changelog.php:

• Version history updated

README.md:

• Documentation improvements

Technical details:

• All string concatenations: 'text'.$var (no spaces)
• Function braces: function name(): type { (same line)
• Input validation: getVar() with proper type hints
• Security: Proper input filtering and validation
• Code style: Consistent SLAED standards applied

Impact:

• Improved code readability and maintainability
• Enhanced security through proper input validation
• Consistent code style across admin modules
• Better adherence to SLAED coding standards

Changed last updated date from January 2025 to December 2025

Enhanced README.md with professional structure and detailed documentation: Content improvements:

• Added status badges (PHP version, license, status, migration progress)
• Added Quick Start section with 5-step installation guide
• Added detailed Installation section with 2 methods (manual + setup.php)
• Expanded System Requirements with PHP extensions
• Fixed typo: "Ngnix" → "Nginx"

Feature documentation:

• Categorized Features section (Core, Content Management, E-Commerce, SEO)
• Added detailed Project Structure with file descriptions
• Added Modernization Status section (50% complete, 2106+ SQL queries secured)
• Expanded Tech Stack with security details

Development guidelines:

• Enhanced Coding Standards with complete PHP code examples
• Added 8 mandatory function verbs (get, set, add, update, delete, is, check, filter)
• Added Security Best Practices with correct/incorrect examples
• Added Variable and Constant naming conventions
• Added Code Style examples with type declarations

Additional sections:

• Contributing Guidelines with Git workflow
• Expanded License section with GPL v3 details
• Support section with documentation/issues/forum links
• Professional formatting with emojis and clear structure

Technical improvements:

• Modern GitHub README best practices
• Better readability and scanability
• Comprehensive developer onboarding documentation
• Clear code examples for SLAED standards

Impact:

• Much more professional and comprehensive documentation
• Easier onboarding for new contributors
• Clear coding standards and security guidelines
• Better project presentation on GitHub

• check_compat.php: Translate comment to English
• changelog.php: Translate error message to English