Sets WP constants in Lando sites

wp-config-lando.php

<?php
/**
 * Sets WP_HOME and WP_SITEURL based on environment settings.
 *
 * @return void
 */
/**
 * Sets WP_HOME and WP_SITEURL based on environment settings.
 *
 * @return void
 */
( function (): void {
	$filter = fn( string $type ): ?string => filter_var(
		getenv( $type, true ) ?: getenv( $type ),
		FILTER_SANITIZE_URL
	);

	if (
		defined( 'WP_HOME' ) && ! empty( $filter( 'WP_HOME' ) ) &&
		defined( 'WP_SITEURL' ) && ! empty( $filter( 'WP_SITEURL' ) )
	) {
		return;
	}

	$home_url = $filter( 'WP_HOME' );

	if ( getenv( 'PANTHEON_ENVIRONMENT' ) === 'lando' && empty( $home_url ) ) {
		$home_url = filter_var(
			sprintf( 'https://%1$s.%2$s', getenv( 'LANDO_APP_NAME' ), getenv( 'LANDO_DOMAIN' ) ),
			FILTER_SANITIZE_URL
		);
	}

	define( 'WP_HOME', $home_url );

	if ( ! defined( 'WP_SITEURL' ) ) {
		$site_url = $filter( 'WP_SITEURL' );
		define( 'WP_SITEURL', empty( $site_url ) ? $home_url . '/wp' : $site_url );
	}
} )();