PHP Install

PHP Installation & Local Environment Setup

To execute PHP code on your local computer, you need the PHP CLI executable and optionally a local web server environment (such as XAMPP, Herd, Docker, or native PHP CLI development server).

Environment Setup Methods

Developers choose local PHP runtime environments based on OS and workflow complexity:

flowchart TD
    A["Choose Local Environment"] --> B["PHP CLI Native (Lightweight)"]
    A --> C["Laravel Herd / Valet (macOS / Windows)"]
    A --> D["XAMPP / MAMP (All-in-One GUI)"]
    A --> E["Docker Container (Production Parity)"]
    B --> F["Run 'php -S localhost:8000'"]
    C --> F
    D --> F
    E --> F

Installing PHP and Verifying Setup

1. Windows (via Chocolatey / Direct Binary)

# Using Chocolatey Package Manager
choco install php

# Or verify existing PHP version in terminal
php -v

2. Linux (Ubuntu / Debian)

sudo apt update
sudo apt install php-cli php-mbstring php-xml php-curl php-mysql

3. macOS (via Homebrew)

brew install php

Running the Built-in PHP Development Server

You can run a local development web server instantly without configuring Apache or Nginx:

# Navigate to project directory containing index.php
cd /path/to/project

# Start local server on port 8000
php -S localhost:8000

Practical Code Example (index.php)

<?php
// Verify PHP installation & display environment runtime configuration
echo "PHP Version: " . phpversion() . "
";
echo "Loaded Configuration File: " . php_ini_loaded_file() . "
";
?>

Best Practices

• Always Install Required Extensions: Ensure common extensions like pdo_mysql, mbstring, openssl, and curl are enabled in php.ini.
• Use php -S for Quick Local Testing: The built-in dev server is ideal for testing static & dynamic PHP scripts before staging deployments.
• Set display_errors = On in Development: Enable error reporting in development php.ini to catch syntax and runtime bugs immediately.

Self-Check Challenge

Open your terminal or command prompt, type php -v, and write a script info.php that prints out the current PHP version using phpversion()!