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<?php
/**
* WPMU DEV hosting integration.
*
* @since 2.6.2
* @package Hummingbird\Core\Integration
*/
namespace Hummingbird\Core\Integration;
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
/**
* Class WPMUDev
*/
class WPMUDev {
/**
* WPMUDev constructor.
*
* @since 2.6.2
*/
public function __construct() {
if ( ! $this->should_run() ) {
return;
}
// Purge FastCGI cache.
add_action( 'wphb_clear_cache_url', array( $this, 'purge_cache' ) );
}
/**
* Check if the integration module should be enabled.
*
* @since 2.6.2
* @return bool
*/
private function should_run() {
// Only run on WPMU DEV hosting.
if ( ! isset( $_SERVER['WPMUDEV_HOSTED'] ) ) {
return false;
}
// Only run on production.
if ( ! isset( $_SERVER['WPMUDEV_HOSTING_ENV'] ) || 'production' !== $_SERVER['WPMUDEV_HOSTING_ENV'] ) {
return false;
}
return true;
}
/**
* Purge cache.
*
* @since 2.6.2
*
* @param string $path Path to purge for.
*/
public function purge_cache( $path = '' ) {
if ( isset( $_SERVER['HTTP_HOST'] ) ) {
$domain = htmlentities( wp_unslash( $_SERVER['HTTP_HOST'] ) ); // Input var ok.
} else {
$domain = untrailingslashit( get_site_url( null, null, 'https' ) );
}
$resolver = str_replace( array( 'http://', 'https://' ), '', $domain ) . ':443:127.0.0.1';
// To purge only the home page / we need to append a $ character as the purge URL is a regex.
if ( '/' === $path ) {
$path = '/$';
}
$url = empty( $path ) ? $domain . '/*' : $domain . $path;
$ch = curl_init();
curl_setopt_array(
$ch,
array(
CURLOPT_URL => $url,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_NOBODY => true,
CURLOPT_HEADER => false,
CURLOPT_CUSTOMREQUEST => 'PURGE',
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_DNS_USE_GLOBAL_CACHE => false,
CURLOPT_RESOLVE => array(
$resolver,
),
)
);
curl_exec( $ch );
curl_close( $ch );
}
}