care-book-block-ultimate/.specify/research/compatibility/tech-compatibility-report.md

Technology Compatibility Report - Care Book Block Ultimate

Generated: 2025-09-12 22:35
Research Phase: Web Research Obrigatória
Context: WordPress Plugin Development

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🚨 CRITICAL COMPATIBILITY FINDINGS

❌ PHP 7.4 - EOL SECURITY RISK

• Status: 🔴 End-of-Life since November 28, 2022
• Risk Level: CRITICAL
• Issue: No official security updates for 2+ years
• 2024-2025 Vulnerabilities: 18 vulnerabilities in 2024, 11 in 2025
• Current Usage: 35.68% still using (legacy)

🚨 RECOMMENDATION: UPGRADE IMMEDIATELY to PHP 8.1+ or PHP 8.4

• PHP 8.4 supported until December 31, 2028
• Breaking changes from PHP 7.4 → 8.x require code adaptation

❌ MySQL 5.7 - EOL SINCE 2023

• Status: 🔴 Oracle Sustaining Support only (since Oct 25, 2023)
• Risk Level: HIGH
• Issue: Limited security updates, performance limitations

🚨 RECOMMENDATION: UPGRADE to MySQL 8.0+

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✅ CURRENT COMPATIBILITY STATUS

✅ WordPress 6.8 (Latest - 2025)

• Status: 🟢 Fully Supported and Secure
• Current Version: WordPress 6.8 "Cecil" (April 2025)
• Release Cycle: Changed to annual releases (2025+)
• Compatibility: Excellent for plugin development
• Security: Regular maintenance releases (6.7.2, 6.7.1)

✅ KiviCare 3.6.8 (Latest - Feb 2025)

• Status: 🟢 Actively Maintained
• Current Version: 3.6.8 (Feb 24, 2025)
• WordPress Compatibility: 6.7.1+ confirmed
• WooCommerce: 9.6.0+ compatible
• Security: Fixed vulnerabilities in 3.6.8
• Integration: VueJS-based, stable API

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🏗️ ARCHITECTURE COMPATIBILITY MATRIX

Technology	Current Version	Compatibility	Security	Recommendation
WordPress	6.8	✅ Excellent	✅ Secure	COMPATIBLE
KiviCare	3.6.8	✅ Excellent	✅ Secure	COMPATIBLE
PHP	7.4 EOL	❌ Critical	❌ Vulnerable	UPGRADE REQUIRED
MySQL	5.7 EOL	⚠️ Limited	⚠️ Limited	UPGRADE REQUIRED
PSR-4	Current	✅ Standard	✅ Best Practice	RECOMMENDED

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📋 PSR-4 AUTOLOADING COMPATIBILITY (2024-2025)

✅ Modern WordPress Plugin Development

• Status: 🟢 Industry Standard
• WordPress Adoption: Increasingly embraced by community
• Composer Integration: Essential for modern development
• Benefits: Simplified file management, improved performance

⚠️ WordPress Coding Standards Conflict

// WordPress Standard (discouraged for PSR-4)
class-plugin-name.php

// PSR-4 Standard (recommended)
PluginName.php

🎯 SOLUTION: Use Composer PSR-4 autoloading, ignore WP naming for internal classes:

{
  "autoload": {
    "psr-4": {
      "CareBook\\Ultimate\\": "src/"
    }
  }
}

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🚨 IMMEDIATE ACTION REQUIRED

1. PHP VERSION UPGRADE

# Current minimum requirement: PHP 7.4 (VULNERABLE)
# Required upgrade: PHP 8.1+ (LTS) or PHP 8.4 (Latest)

# Development environment
php -v  # Check current version
# Upgrade to PHP 8.4 for latest features and security

2. MySQL VERSION UPGRADE

# Current minimum: MySQL 5.7 (EOL)
# Required upgrade: MySQL 8.0+

# Check current MySQL version
mysql --version
# Plan migration to MySQL 8.0.x

3. Updated Architecture Requirements

## REVISED TECHNICAL REQUIREMENTS

### Minimum Requirements (SECURITY-UPDATED)
- **PHP**: 8.1+ (LTS) or 8.4+ (Latest) ⬆️ UPGRADED
- **WordPress**: 6.0+ (targeting 6.8+) ✅ COMPATIBLE
- **MySQL**: 8.0+ ⬆️ UPGRADED
- **KiviCare**: 3.6.8+ ✅ COMPATIBLE

### Recommended Stack
- **PHP**: 8.4 (supported until 2028)
- **WordPress**: 6.8+ (latest features)
- **MySQL**: 8.0.35+ (performance + security)
- **KiviCare**: 3.6.8+ (latest security fixes)

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🔄 COMPATIBILITY MIGRATION IMPACT

Code Changes Required:

1. PHP 7.4 → 8.4:

   • Update type declarations
   • Review deprecated functions
   • Test all functionality
   • Update composer.json requirements

2. MySQL 5.7 → 8.0:

   • Review SQL compatibility
   • Update connection parameters
   • Test query performance
   • Update documentation

Testing Strategy:

• Test on PHP 8.1, 8.2, 8.4
• Validate WordPress 6.6, 6.7, 6.8 compatibility
• Test KiviCare 3.6.8+ integration
• Performance benchmarking on new stack

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✅ APPROVED FINAL TECH STACK

Production Stack (Security-Validated):
  PHP: 8.4+ (latest, supported until 2028)
  WordPress: 6.8+ (latest, annual releases)
  MySQL: 8.0.35+ (performance + security)
  KiviCare: 3.6.8+ (latest security fixes)
  Composer: Latest (PSR-4 autoloading)
  
Development Standards:
  - PSR-4 autoloading (Composer)
  - WordPress Coding Standards (public APIs)
  - Modern PHP features (type declarations, etc.)
  - Security-first approach (input sanitization, output escaping)

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🛡️ SECURITY NOTE: Current minimum requirements (PHP 7.4 + MySQL 5.7) expose system to CRITICAL security vulnerabilities. Immediate upgrade essential for production deployment.

📈 PERFORMANCE NOTE: Modern stack (PHP 8.4 + MySQL 8.0) provides significant performance improvements over legacy versions.

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Report Generated By: Web Research Obrigatória
Next Phase: Technical Architecture Planning with updated stack