Php Wordpress

WordPress Development Skill

Atomic skill for mastering WordPress theme and plugin development

Overview

Comprehensive skill for building WordPress themes, plugins, and Gutenberg blocks. Covers WordPress 6.x with focus on modern development practices and security.

Skill Parameters

Input Validation

interface SkillParams {
  topic:
    | "themes"           // Classic, block, FSE
    | "plugins"          // Architecture, hooks, settings
    | "gutenberg"        // Blocks, patterns, InnerBlocks
    | "rest-api"         // Custom endpoints, authentication
    | "security"         // Nonces, sanitization, escaping
    | "woocommerce";     // Store extensions

  level: "beginner" | "intermediate" | "advanced";
  wp_version?: "6.4" | "6.5" | "6.6" | "6.7";
  theme_type?: "classic" | "block" | "hybrid";
}

Validation Rules

validation:
  topic:
    required: true
    allowed: [themes, plugins, gutenberg, rest-api, security, woocommerce]
  level:
    required: true
  wp_version:
    default: "6.6"

Learning Modules

Module 1: Theme Development

beginner:
  - Theme structure and files
  - Template hierarchy
  - Enqueuing styles/scripts

intermediate:
  - Custom post types
  - Theme customizer
  - Block theme basics

advanced:
  - Full Site Editing
  - theme.json deep dive
  - Performance optimization

Module 2: Plugin Development

beginner:
  - Plugin structure
  - Actions and filters
  - Shortcodes

intermediate:
  - Settings API
  - Custom database tables
  - AJAX handling

advanced:
  - Plugin architecture patterns
  - WP-CLI commands
  - Multisite support

Module 3: Gutenberg Blocks

beginner:
  - Block basics and block.json
  - Edit and save functions
  - Block attributes

intermediate:
  - InnerBlocks
  - Block variations
  - Server-side rendering

advanced:
  - Interactivity API
  - Block Bindings
  - Custom block categories

Error Handling & Retry Logic

errors:
  HOOK_ERROR:
    code: "WP_001"
    recovery: "Check hook name and timing"

  SECURITY_ERROR:
    code: "WP_002"
    recovery: "Add proper escaping/sanitization"

retry:
  max_attempts: 3
  backoff:
    type: exponential
    initial_delay_ms: 100

Code Examples

Plugin Header

<?php
/**
 * Plugin Name: My Custom Plugin
 * Description: A custom WordPress plugin
 * Version: 1.0.0
 * Requires PHP: 8.0
 * Author: Developer
 */

declare(strict_types=1);

defined('ABSPATH') || exit;

final class MyCustomPlugin
{
    public function __construct()
    {
        add_action('init', [$this, 'registerPostType']);
        add_action('rest_api_init', [$this, 'registerRoutes']);
    }

    public function registerPostType(): void
    {
        register_post_type('portfolio', [
            'labels' => ['name' => __('Portfolio')],
            'public' => true,
            'show_in_rest' => true,
            'supports' => ['title', 'editor', 'thumbnail'],
        ]);
    }

    public function registerRoutes(): void
    {
        register_rest_route('myplugin/v1', '/items', [
            'methods' => 'GET',
            'callback' => [$this, 'getItems'],
            'permission_callback' => '__return_true',
        ]);
    }

    public function getItems(\WP_REST_Request $request): \WP_REST_Response
    {
        $items = get_posts(['post_type' => 'portfolio']);
        return new \WP_REST_Response($items, 200);
    }
}

new MyCustomPlugin();

Gutenberg Block (block.json)

{
  "$schema": "https://schemas.wp.org/trunk/block.json",
  "apiVersion": 3,
  "name": "myplugin/testimonial",
  "title": "Testimonial",
  "category": "widgets",
  "icon": "format-quote",
  "description": "Display a testimonial",
  "supports": {
    "html": false,
    "align": ["wide", "full"]
  },
  "attributes": {
    "content": { "type": "string" },
    "author": { "type": "string" }
  },
  "textdomain": "myplugin",
  "editorScript": "file:./index.js",
  "style": "file:./style-index.css"
}

Security Best Practices

<?php
// Input sanitization
$title = sanitize_text_field($_POST['title'] ?? '');
$content = wp_kses_post($_POST['content'] ?? '');
$id = absint($_POST['id'] ?? 0);

// Output escaping
echo esc_html($title);
echo esc_attr($attribute);
echo esc_url($url);
echo wp_kses_post($content);

// Nonce verification
if (!wp_verify_nonce($_POST['_wpnonce'], 'my_action')) {
    wp_die('Security check failed');
}

// Capability check
if (!current_user_can('edit_posts')) {
    wp_die('Unauthorized');
}

// Database queries
global $wpdb;
$results = $wpdb->get_results(
    $wpdb->prepare(
        "SELECT * FROM {$wpdb->prefix}custom_table WHERE id = %d",
        $id
    )
);

Troubleshooting

Debug Constants

// wp-config.php
define('WP_DEBUG', true);
define('WP_DEBUG_LOG', true);
define('WP_DEBUG_DISPLAY', false);
define('SCRIPT_DEBUG', true);

Quality Metrics

Usage

Skill("php-wordpress", {topic: "gutenberg", level: "intermediate"})

Php Wordpress Guide

Overview

This guide provides comprehensive documentation for the php-wordpress skill in the custom-plugin-php plugin.

Category: General

Quick Start

Prerequisites

• Familiarity with general concepts
• Development environment set up
• Plugin installed and configured

Basic Usage

# Invoke the skill
claude "php-wordpress - [your task description]"

# Example
claude "php-wordpress - analyze the current implementation"

Core Concepts

Key Principles

1. Consistency - Follow established patterns 2. Clarity - Write readable, maintainable code 3. Quality - Validate before deployment

Best Practices

• Always validate input data
• Handle edge cases explicitly
• Document your decisions
• Write tests for critical paths

Common Tasks

Task 1: Basic Implementation

# Example implementation pattern
def implement_php_wordpress(input_data):
    """
    Implement php-wordpress functionality.

    Args:
        input_data: Input to process

    Returns:
        Processed result
    """
    # Validate input
    if not input_data:
        raise ValueError("Input required")

    # Process
    result = process(input_data)

    # Return
    return result

Task 2: Advanced Usage

For advanced scenarios, consider:

• Configuration customization via assets/config.yaml
• Validation using scripts/validate.py
• Integration with other skills

Troubleshooting

Common Issues

Related Resources

• SKILL.md - Skill specification
• config.yaml - Configuration options
• validate.py - Validation script

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Last updated: 2025-12-30

Php Wordpress Patterns

Design Patterns

Pattern 1: Input Validation

Always validate input before processing:

def validate_input(data):
    if data is None:
        raise ValueError("Data cannot be None")
    if not isinstance(data, dict):
        raise TypeError("Data must be a dictionary")
    return True

Pattern 2: Error Handling

Use consistent error handling:

try:
    result = risky_operation()
except SpecificError as e:
    logger.error(f"Operation failed: {e}")
    handle_error(e)
except Exception as e:
    logger.exception("Unexpected error")
    raise

Pattern 3: Configuration Loading

Load and validate configuration:

import yaml

def load_config(config_path):
    with open(config_path) as f:
        config = yaml.safe_load(f)
    validate_config(config)
    return config

Anti-Patterns to Avoid

❌ Don't: Swallow Exceptions

# BAD
try:
    do_something()
except:
    pass

✅ Do: Handle Explicitly

# GOOD
try:
    do_something()
except SpecificError as e:
    logger.warning(f"Expected error: {e}")
    return default_value

Category-Specific Patterns: General

Recommended Approach

1. Start with the simplest implementation 2. Add complexity only when needed 3. Test each addition 4. Document decisions

Common Integration Points

• Configuration: assets/config.yaml
• Validation: scripts/validate.py
• Documentation: references/GUIDE.md

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Pattern library for php-wordpress skill