WordPress Development Environment

Here’s a little detail about the development environment setup that I use whenever I need to develop a WordPress theme or plugin. My aim is to somewhat isolate each project (sadly, not quite as effectively as Python’s VirtualEnv) and keep it from impacting more general workstation setup such as configs under /etc/.

Run PHP in Isolation

No need to set up a new virtual web server for each site. Use PHP’s CLI and a router…

Get and unzip latest copy of WordPress and rename as necessary for new project:

$ wget https://wordpress.org/latest.tar.gz
$ tar xzvf latest.tar.gz
$ cp wordpress newproject
$ cd newproject
$ mv wp-config-sample.php wp-config.php

Ensure PHP command-line is installed:

$ sudo apt-get install php7.0-cli

Create a router.php file in the root directory (we named ours ‘newproject’, above) of the WordPress install:

<?php
$root = $_SERVER['DOCUMENT_ROOT'];
chdir($root);

$path = '/'.ltrim( parse_url($_SERVER['REQUEST_URI'] )['path'],'/');

if (file_exists($root.$path)) {
    if (is_dir($root.$path) && substr($path,strlen($path) - 1, 1) !== '/') {
        header('Location: '.rtrim( $path,'/' ).'/');
        exit;
    }

    if (strpos($path,'.php') === false) {
        return false;
    } else {
        chdir(dirname($root.$path));
        require_once $root.$path;
    } 
} else {
    include_once 'index.php';
}

From within the root directory of the WordPress installation run PHP’s built-in server from the command-line, passing the name of our router.php file as an argument:

$ php -S localhost:8080 router.php

PHP will then pass all HTTP requests through the router, which either, redirects, passes control to WordPress or serves up static assets as necessary.

From a browser access the newly created project (http://localhost:8080) and the familiar WordPress installation routine should be presented.

Disposable Database Setup

Get latest version of WordPress SQLite plugin and extract inside the plugins directory:

$ cd wp-content/plugins
$ wget https://downloads.wordpress.org/plugin/sqlite-integration.zip
$ unzip sqlite-integration.zip

Copy db.php from sqlite-integration plugin into the wp-content directory

$ cp sqlite-integration/db.php ../.

Ensure php7.0-sqlite3 and sqlite3 are both installed:

$ sudo apt-get install sqlite3 php7.0-sqlite3
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