PHP & WordPress Engineering Portfolio

This repository documents my transition from Data Science to Backend Engineering, specifically focusing on the WordPress ecosystem. It serves as a centralized location for my code, experiments, and custom plugins built using the rtCamp technology stack.

Learning Roadmap

Phase 1: The Fundamentals

• PHP 8.x Basics (Syntax, Arrays, Functions)
• Object-Oriented PHP (Classes, Inheritance)
• Security Best Practices (Sanitization, Validation)

Phase 2: WordPress Core

• Understanding wp-config.php and File Structure
• Plugin Architecture & Hooks
• Shortcode API
• HTTP API & Transients (Caching)

Phase 3: Enterprise Engineering

• WP-CLI (Command Line Interface) for automation
• Data Migration (Handling bulk data ingestion)
• Programmatic Content Creation

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Project Documentation

1. Enterprise CLI Bulk Importer (New!)

File: cli-bulk-importer.php | Type: WP-CLI Command

A command-line tool designed to handle large-scale data migrations. It reads a CSV file and programmatically inserts posts into the WordPress database with a visual progress indicator.

Technical Highlights:

• WP-CLI Integration: Extends WP_CLI_Command to run scripts directly in the terminal, bypassing server timeout limits inherent to browser-based uploads.
• Stream Processing: Uses fopen() and fgetcsv() to stream data line-by-line, ensuring memory efficiency even with large datasets.
• UX for Engineers: Implements WP_CLI\Utils\make_progress_bar() to provide real-time feedback during long-running operations.
• Data Integrity: Validates file existence and sanitizes data using wp_strip_all_tags() before insertion.

2. GitHub Portfolio Fetcher

File: github-portfolio-fetcher.php | Type: Widget Plugin

A widget that connects to the GitHub REST API to display live repository data, demonstrating third-party integration skills.

Technical Highlights:

• HTTP API: Uses wp_remote_get() to consume external JSON APIs securely.
• Performance Caching: Implements the WordPress Transients API to cache API responses for 1 hour, reducing server load.
• Error Handling: Gracefully manages API connection failures.

3. Cricket Pace Calculator

File: cricket-pace-calculator.php | Type: Logic Plugin

A physics-based calculator for bowling speed, re-engineered using Object-Oriented Programming principles.

Technical Highlights:

• Object-Oriented Architecture: Implements a class-based structure with distinct methods for rendering and logic processing.
• Security: Utilizes floatval() for strict input sanitization.
• Separation of Concerns: Decouples the UI rendering from the mathematical logic.

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Installation & Usage Instructions

For Plugins (Projects 2 & 3)

1. Upload the file to wp-content/plugins/.
2. Activate via the WordPress Admin Dashboard.
3. Use the shortcodes: [cricket_calculator] or [my_github_repos].

For CLI Tools (Project 1)

1. Place cli-bulk-importer.php in your plugin directory or mu-plugins.
2. Open your terminal and navigate to the WordPress root.
3. Run the import command:

   wp vamsi_import run mock-data.csv