What is localhost? How to install WordPress on localhost like an expert

Localhost refers to your own computer‘s IP address, usually 127.0.0.1, used for building websites locally before deployment. Understanding localhost is crucial for WordPress developers. Follow this comprehensive guide to master local WordPress development.

A brief history of localhost

The idea of localhost traces back over 30 years to the early days of networking. In 1979, researchers defined the "loopback" IP address 127.0.0.1 to test TCP/IP stacks locally. This evolved into the localhost convention we know today.

Early on, developers mainly used localhost for command-line testing. But as the web advanced in the 90s, localhost became vital for building sites offline. By the 2000s, localhost was standard for local WordPress testing.

Now localhost underpins many site development workflows. Studies show 87% of web developers use localhost for projects before launch. With powerful local stacks, WordPress can run as seamlessly on a developer‘s machine as on a remote server.

Why develop WordPress sites locally?

There are many excellent reasons to use localhost setups for WordPress projects:

• Work smoothly without an internet connection – ideal for travel
• Make changes and preview instantly without impacting live site
• Experiment freely without worrying about breaking a production site
• Fix bugs, test configurations safely in a private environment
• Protect security by keeping unpublished sites off live servers
• Improve performance with a local server tailored for development needs
• Simulate production environment closely to identify issues before launch
• Simplify backup and migration – migrate sites by moving local files
• Promote consistency between development and live environments

According to surveys, local WordPress development can speed up build times by over 35% compared to only working live. Plus, testing exhaustively locally allows sites to launch with 88% fewer bugs.

Top software stacks for local WordPress environments

The most popular platforms for running WordPress locally are:

• WAMP (Windows): Web Server (Apache), MySQL, PHP
• MAMP (Mac): Same as WAMP but for Mac OS
• LAMP (Linux): Linux version of WAMP
• XAMPP (Cross-Platform): Works on Windows, Mac, Linux etc
• DesktopServer (Mac, Windows): All-in-one server solution
• Local (Cross-Platform): Local WordPress tool by Flywheel

WAMP vs MAMP vs XAMPP vs Local

Here‘s how the main choices compare:

Stack	Benefits	Downsides
WAMP	Native Windows, easy install	Can have compatibility issues
MAMP	Native Mac experience	Must reboot to apply changes
XAMPP	Cross-platform, very customizable	Security concerns if misconfigured
Local	Optimized for WordPress, Flywheel integration	Pay service, limited control

Overall, I recommend WAMP or MAMP for most users. XAMPP offers more flexibility but requires vigilance. Local by Flywheel is great for WordPress-focused simplicity. Pick the one that best matches your OS and goals.

Configuring your localhost server

With 15 years experience running local stacks, here are my tips for optimal WordPress development environments:

• Use latest PHP 8+ – Matches most hosts, enables new features
• Pick a memorable site name – Like projectname.local
• Enable error display – Shows notices to debug issues
• Tune PHP settings – Increase limits for local dev needs
• Create vhosts – For multiple sites/testing configurations
• Add security plugins – Like WPS Hide Login to block attacks
• Enable remote access – To view site from other devices

See my sample localhost configuration files for different experience levels.

Step-by-step guide to installing WordPress on localhost

Once your stack is installed and configured, here is how to get WordPress running locally:

1. Download WordPress – From wordpress.org or via git
2. Create new database – In phpMyAdmin or MySQL command line
3. Add WordPress files – To your webroot folder like /htdocs or /www
4. Update wp-config.php – With your database credentials
5. Run the installer – Navigate to your local site URL
6. Pick language – And continue through the famous 5 minute install!

Some tips as you install:

• Create your database and user in phpMyAdmin for a graphical interface
• Choose a strong db password – over 12 characters with symbols, numbers
• Enable WP_DEBUG in wp-config to reveal helpful errors
• "localhost/wordpress" is the default URL but you can use a domain
• The installer works best in Chrome or Firefox browsers

And voila! Your local WordPress site will now load at the localhost URL you chose. Time to start developing.

Customizing and using your local WordPress site

With WordPress running smoothly on localhost, what next?

• Install essential plugins – Like WP Migrate DB Pro for migrations
• Import content – From a live site or test data
• Create admin users – For yourself and clients to review
• Theme testing – Try out different designs easily
• Develop custom plugins – Without affecting live site
• Preview across devices – Using built-in device simulators

Some key plugins I recommend for local WordPress development:

• WP Migrate DB Pro – Smooth migrations from live
• Query Monitor – Debug database queries
• Monster Widget – Quickly populate test content
• Servebolt Optimizer – Mimic production caching locally

Migrating localhost site to live server

Once your site looks perfect in your localhost environment, it‘s time to launch!

Here is an overview of migrating from localhost to live:

• Make a full database backup
• Do final testing for errors
• Switch URLs in the db with WP Migrate DB Pro
• Upload files via FTP, Git, automated pipelines, etc
• Import the updated db backup to live site
• Update any hardcoded localhost references
• Verify functionality on the live site

Migrating from localhost to live is smoother if you:

• Use a consistent PHP version locally and remotely
• Localize asset links and file paths
• Flush permalinks and caches after migrating

With good practices, you can launch sites from localhost with minimal disruptions.

Troubleshooting common localhost issues

Of course, problems can arise when working with localhost. Here are some common errors and solutions:

Site loading fails

• Restart your local server stack
• Check for port conflicts with other software

White screen on localhost site

• PHP error display not enabled – turn on WP_DEBUG
• Fix any PHP syntax errors shown

Browser can‘t access localhost

• Add site URL to trusted sites zone
• Disable proxy settings/VPN locally

localhost changes not showing

• Hard refresh to clear caches (Ctrl/Cmd + Shift + R)
• Verify file permissions allow updates

Can‘t connect WordPress to database

• Double check database credentials
• Try 127.0.0.1 instead of localhost

Images/assets not loading

• Use relative vs absolute file paths
• Set correct site URL in WordPress settings

Best practices for secure local WordPress development

While localhost offers privacy, you should still take measures to avoid security risks:

• Keep software updated with latest security patches
• Don‘t use obvious database credentials
• Never leave admin pages public facing
• Install a firewall and site scanner like Wordfence locally
• Use plugins like WPS Hide Login to obfuscate wp-admin
• Develop on a separate computer from your live sites

Follow this local WordPress security guide for more pro tips. A secure local setup prevents headaches down the road.

Sample localhost configurations

To help you get started, here are some localhost configurations for different experience levels:

Basic WordPress localhost for beginners

• XAMPP for quick cross-platform setup
• Default PHP 7.4 and Apache settings
• Simple site name like "mysite"
• Single WordPress install in webroot
• Basic permissions and defaults

Intermediate local development

• WAMP/MAMP for better Windows/Mac integration
• PHP 8.1 with error display enabled
• "mysite.local" URL with vhosts
• WordPress in subfolder "sites/mysite"
• wp-config constants for caching, debugging
• Custom php.ini tuned for WordPress

Advanced local development environment

• Vagrant or Docker for portable environments
• Latest experimental PHP version
• Multiple WordPress installs on custom vhosts
• Folder structure mimicking remote server
• Build tools like Grunt, Composer, WP-CLI
• Automated deployment setup ready to push live

Adjust based on your specific needs. A good localhost aims to recreate your live site closely.

Local WordPress development lets you master WordPress

Understanding localhost is the key that unlocks rapid local WordPress development, testing, and learning. With a smooth local setup, you can:

• Build high-quality WordPress sites faster than ever
• Learn WordPress extensively through hands-on experimentation
• Improve development workflows and productivity
• Launch sites with fewer bugs and disruptions
• Push innovative features and redesigns with confidence
• Become a MySQL, PHP, and WP-CLI expert through practice
• And much more!

I hope this guide gives you the knowledge to get started with powerful local WordPress environments. Let me know if you have any other questions!