Code Review Checklist for MainWP Documentation

This checklist should be used when reviewing code examples in MainWP documentation to ensure consistency, security, and adherence to WordPress coding standards.

Formatting and Style

• Indentation: Uses 4 spaces per WordPress standards (not tabs)
• Brace Placement: Opening brace on same line as statement, closing brace on its own line
• Spacing: Space after commas, around operators, and after control structure keywords
• Line Length: Lines kept to a reasonable length (generally under 100 characters)
• Naming Conventions:
  • Functions and variables use snake_case
  • Classes use CamelCase
  • Constants use UPPERCASE_WITH_UNDERSCORES
• Commenting:
  • DocBlocks for functions, classes, and methods
  • Inline comments for complex logic
  • Comments are clear and add value (not just restating the code)

WordPress Coding Standards

• WordPress Functions: Uses WordPress functions instead of PHP equivalents where appropriate
  • wp_remote_get() instead of curl_exec()
  • sanitize_*() functions for sanitization
  • esc_*() functions for escaping output
  • wp_enqueue_script() and wp_enqueue_style() for assets
• Internationalization:
  • Text strings are wrapped in __(), _e(), or equivalent
  • Text domain is included in translation functions
  • Placeholders use sprintf() instead of string concatenation
• Capability Checks:
  • Uses current_user_can() or mainwp_current_user_can() before operations
  • Uses appropriate capabilities (manage_options instead of just read)
• Database Operations:
  • Uses $wpdb->prepare() for SQL queries with variables
  • Uses WordPress functions for common operations (get_option(), update_option(), etc.)

Security Practices

• Input Validation:
  • All user inputs are validated before use
  • Type checking is performed where appropriate
  • Boundary checking for numeric values
• Input Sanitization:
  • All user inputs are sanitized using appropriate functions
  • Uses context-appropriate sanitization functions
• Output Escaping:
  • All output is properly escaped using appropriate functions
  • Context-specific escaping functions are used
• Nonce Verification:
  • Nonces are created for forms and AJAX requests
  • Nonces are verified before processing data
• Capability Checks:
  • Appropriate capability checks before performing operations
• File Operations:
  • Secure file handling practices
  • Path traversal prevention

Error Handling

• Graceful Failures:
  • Functions return appropriate error values/objects
  • User-friendly error messages
• Logging:
  • Errors are logged when appropriate
  • Logging is conditional based on debug settings
• Exception Handling:
  • Try/catch blocks for operations that might throw exceptions
  • Proper exception handling and reporting

MainWP-Specific Standards

• MainWP Hooks:
  • Uses appropriate MainWP actions and filters
  • Hook naming follows MainWP conventions
• MainWP Functions:
  • Uses MainWP helper functions where available
  • Follows MainWP patterns for common operations
• Extension Registration:
  • Proper extension registration with MainWP
  • Correct callback structure

Performance Considerations

• Caching:
  • Implements caching for expensive operations
  • Uses transients or object cache appropriately
• Database Efficiency:
  • Minimizes database queries
  • Uses efficient query patterns
• Pagination:
  • Implements pagination for large datasets
• Resource Usage:
  • Avoids memory-intensive operations
  • Cleans up resources after use

Defensive Programming

• Null Checks:
  • Checks for null/undefined values before use
• Type Checking:
  • Verifies variable types before operations
• Error States:
  • Handles error states gracefully
  • Returns meaningful error messages
• Default Values:
  • Provides sensible defaults for parameters
  • Handles empty or invalid inputs gracefully

Documentation

• DocBlocks:
  • All functions, classes, and methods have DocBlocks
  • Parameters and return values are documented
  • Types are specified for parameters and return values
• Inline Comments:
  • Complex logic is explained with inline comments
  • Comments add value beyond what the code itself conveys
• Example Usage:
  • Examples show typical usage patterns
  • Examples include error handling

Compatibility

• PHP Version:
  • Code is compatible with PHP 7.0+ (MainWP's minimum requirement)
  • Avoids deprecated PHP functions
• WordPress Version:
  • Code is compatible with WordPress 5.0+ (MainWP's minimum requirement)
  • Avoids deprecated WordPress functions
• MainWP Version:
  • Code is compatible with current MainWP version
  • Notes any version-specific considerations

Testing Considerations

• Testability:
  • Code can be reasonably tested
  • Functions have clear inputs and outputs
• Edge Cases:
  • Handles edge cases appropriately
  • Considers empty inputs, large datasets, etc.
• Error Scenarios:
  • Handles error scenarios gracefully
  • Provides useful feedback for debugging