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Course Overview

The DWCS (Desarrollo Web en Contorno Servidor) course for 2025-26 is a comprehensive server-side web development program focused on PHP, covering everything from basic syntax to advanced topics like authentication, AJAX, and external API integration.

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Course Structure

The course is organized into 7 main themes (TEMA-02 through TEMA-08), each focusing on specific aspects of server-side development:

TEMA-02 & 03

PHP Fundamentals & Forms

TEMA-04

Database Connectivity (PDO/MySQLi)

TEMA-05

Sessions & State Management

TEMA-06

Web Services & Authentication

TEMA-07

AJAX & Asynchronous Communication

TEMA-08

External APIs & OAuth2

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Learning Progression

The course follows a carefully structured progression:
1

Foundation (TEMA-02)

Begin with PHP basics: variables, control structures, functions, and form handling. Learn to process user input safely and validate data.
2

Data Structures (TEMA-03)

Master arrays, file handling, and advanced PHP functions. Build data manipulation skills essential for real-world applications.
3

Database Integration (TEMA-04)

Connect PHP to MySQL databases using PDO. Learn CRUD operations, prepared statements, and database security best practices.
4

State Management (TEMA-05)

Implement sessions and cookies to maintain user state across requests. Build shopping cart functionality and user tracking.
5

Security (TEMA-06)

Develop authentication systems with login/logout functionality. Implement role-based access control and secure password handling.
6

Interactive Web Apps (TEMA-07)

Create dynamic, responsive applications using AJAX. Learn asynchronous communication patterns and modern web app architecture.
7

API Integration (TEMA-08)

Consume external APIs (weather, geolocation, currency). Implement OAuth2 authentication with Google and other providers.

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Topic Coverage by TEMA

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TEMA-02: PHP Fundamentals

Key Topics:
  • PHP syntax and basic constructs
  • Form processing with GET and POST
  • Input validation and sanitization
  • Superglobals ($_GET, $_POST, $_SERVER)
  • String manipulation and formatting
Directory Structure: 
TEMA-02/
├── BOLETINES/
│   ├── DWES-Boletin-01/  # Basic exercises
│   ├── DWES-Boletin-02/  # Form handling
│   └── ... (up to Boletin-10)
├── TAREA-02A/            # Assignment A
└── TAREA-02B/            # Assignment B
Example: Simple form calculator (TEMA-02/BOLETINES/DWES-Boletin-01/E01/index.php)

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TEMA-03: Advanced PHP

Key Topics:
  • Multi-dimensional arrays
  • File system operations
  • Regular expressions
  • Error handling
  • Code organization
Directory Structure: 
TEMA-03/
├── BOLETINES/            # Practice exercises
└── TAREA-03/             # Main assignment

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TEMA-04: Database Connectivity

Key Topics:
  • PDO (PHP Data Objects) vs MySQLi
  • Database connection management
  • CRUD operations (Create, Read, Update, Delete)
  • Prepared statements and SQL injection prevention
  • Transaction handling
Directory Structure: 
TEMA-04/
├── SQL/
│   ├── proyecto.sql      # Database schema
│   └── datosProyecto.sql # Sample data
├── TAREA-04/             # Database CRUD assignment
├── ej3_1_3.php
├── ej3_1_4.php
└── ej4_1.php
Database Schema: The course uses a product inventory system with tables:
  • tiendas (stores)
  • familias (product families)
  • productos (products)
  • stocks (inventory by store)
See the Database Setup section for SQL scripts.

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TEMA-05: Sessions & State Management

Key Topics:
  • Session initialization and configuration
  • Cookie management
  • Shopping cart implementation
  • Session security
  • State persistence patterns
Directory Structure: 
TEMA-05/
├── Parte01/              # Session basics
├── Parte02/              # Advanced sessions
├── TAREA-05-Parte1/      # Assignment part 1
└── TAREA-05-Parte2/      # Assignment part 2 (shopping cart)

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TEMA-06: Authentication & Authorization

Key Topics:
  • User authentication systems
  • Password hashing (password_hash(), password_verify())
  • Session-based login/logout
  • Role-based access control (RBAC)
  • Security best practices
Directory Structure: 
TEMA-06/
├── TAREA-06/             # Complete auth system
├── apuntes_2_1_1/        # Auth basics
├── apuntes_2_1_2/        # Session management
├── apuntes_2_2_0_servicioSoap/  # SOAP services
└── apuntes_2_2_2_servicioWeb/   # Web services
TEMA-06 also introduces web services (SOAP), preparing for the API integration in TEMA-08.

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TEMA-07: AJAX & Asynchronous Communication

Key Topics:
  • XMLHttpRequest and Fetch API
  • JSON data exchange
  • Asynchronous request patterns
  • Real-time updates
  • Jaxon PHP library integration
Directory Structure: 
TEMA-07/
├── EXTRA_AJAX/           # AJAX examples
├── P07_02_01_01/         # Basic AJAX
├── P07_03_01_03/         # JSON handling
├── jaxon/                # Jaxon library examples
└── TAREA-07-anterior/    # Assignment
Jaxon Integration: The course includes extensive examples using the Jaxon library for simplified AJAX development.

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TEMA-08: External APIs & OAuth2

Key Topics:
  • RESTful API consumption
  • API authentication (keys, OAuth2)
  • JSON parsing and manipulation
  • Third-party service integration
  • Google OAuth2 implementation
Directory Structure: 
TEMA-08/
├── EJEMPLOS_SERVICIOS/
│   ├── AEMET/            # Spanish weather API
│   ├── OPENWEATHERMAP/   # Weather data
│   ├── EXCHANGERATE-API.COM/  # Currency exchange
│   ├── GEOPLUGIN/        # Geolocation
│   └── OPEN-METEO/       # Weather forecasts
├── P08_04_04_01/         # API examples
├── P08_04_04_05/         # Google OAuth2
├── TAREA-08-anterior/    # Final assignment
└── claves.inc.php        # API keys configuration
APIs Covered:
  • AEMET: Spanish meteorological agency weather data
  • OpenWeatherMap: Global weather information
  • ExchangeRate-API: Currency conversion rates
  • GeoPlugin: IP geolocation services
  • Google OAuth2: User authentication and authorization
API keys are required for TEMA-08 exercises. See the API Configuration section for setup instructions.

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Activity Types

Each TEMA includes different types of learning activities:

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1. BOLETINES (Exercise Sets)

Short, focused exercises to practice specific concepts. Typically found in themes 02-03. Structure: 
BOLETINES/
└── DWES-Boletin-XX/
    ├── E01/              # Exercise 1
    ├── E02/              # Exercise 2
    └── ...
Each exercise usually contains:
  • index.php - Main exercise file
  • Supporting files (functions, validation, etc.)
  • Sometimes includes automata diagrams (state machines) for complex flows

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2. TAREA (Assignments)

Larger projects that integrate multiple concepts. These are graded assignments. Examples:
  • TAREA-02A / TAREA-02B: Form validation projects
  • TAREA-04: Complete CRUD application with database
  • TAREA-05-Parte2: Shopping cart implementation
  • TAREA-06: User authentication system
  • TAREA-08: API integration project with OAuth2

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3. Apuntes (Study Notes/Examples)

Instructor-provided examples demonstrating best practices. Found primarily in TEMA-06.

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4. MUESTRA-EXAMEN (Exam Samples)

Practice exam materials showing the expected format and difficulty level. 
MUESTRA-EXAMEN2-DWCS/
├── UNIDAD-04-00/         # Database exercises
├── UNIDAD-05-00/         # Session exercises
├── UNIDAD-06-00/         # Authentication exercises
└── UNIDAD-07-00/         # AJAX exercises
Each exam unit includes:
  • SQL schema and data files
  • PHP implementation requirements
  • Complete working solutions

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Repository Structure

The course repository is organized as follows: 
MP0613-DWCS/
├── TEMA-02/              # PHP Fundamentals
├── TEMA-03/              # Advanced PHP
├── TEMA-04/              # Database Integration
├── TEMA-05/              # Sessions & Cookies
├── TEMA-06/              # Authentication
├── TEMA-07/              # AJAX
├── TEMA-08/              # External APIs
├── MUESTRA-EXAMEN2-DWCS/ # Exam samples
├── EJEMPLO-httpd-vhosts.conf  # Apache configuration
├── EJEMPLO_vscode_launch.json # VS Code debug config
└── README.md

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Development Environment

The course uses:
  • PHP 8.2+ (XAMPP distribution recommended)
  • MySQL/MariaDB for database work
  • Apache with virtual hosts for local development
  • VS Code with Xdebug for debugging
See the Setup Guide for detailed installation and configuration instructions.

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Getting Started

1

Clone the Repository

git clone https://github.com/davidgacaeduxuntagal/Curso25-26-MP0613-DWCS.git
2

Set Up Your Environment

Follow the Setup Guide to install PHP, MySQL, and configure Apache virtual hosts.
3

Start with TEMA-02

Begin with the fundamentals in TEMA-02/BOLETINES/DWES-Boletin-01/.
4

Progress Through Topics

Work through each TEMA sequentially, completing BOLETINES exercises before attempting TAREA assignments.

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Next Steps

Environment Setup

Configure your development environment with PHP, MySQL, and Apache

PHP Fundamentals

Begin learning PHP fundamentals and form processing