source: branches/XPressMU/xpressme_integration_kit/include/add_xpress_process.php

<?php
// used wptouch plugin & iPhone access check (thx uemu)
function is_iphone_with_wptouch(){
        global $wptouch_plugin;
        if (is_object($wptouch_plugin)) return $wptouch_plugin->applemobile;
        return false;
}

function safe_site_url(){
        global $xoops_config;
        
        if (is_xpress_index_page_call()){
                $siteurl = get_option('siteurl');
                $home = get_option('home');
                $module_url = $xoops_config->module_url;
                $module_name = $xoops_config->module_name;
                $schema = ( isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) == 'on' ) ? 'https://' : 'http://';
                $guess_url = preg_replace('|/' . $module_name . '/.*|i', '/' . $module_name, $schema . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] );

                if(strcmp($siteurl,$module_url) !== 0) {
                        if (!@fclose(@fopen($siteurl . '/xoops_version.php', "r"))){
                                update_option('siteurl' , $module_url);
                        }
                }

                if(strcmp($guess_ur,$home) !== 0) {
                        if (@fclose(@fopen($guess_url . '/xoops_version.php', "r"))){
                                update_option('home' , $guess_url);
                        }
                }
        }
}

require_once( dirname( __FILE__ ).'/request_url.php');
if (is_xpress_index_page_call()){
        //$_SERVER['REQUEST_METHOD'] = 'POST' is
        //When notifying by a private message, Notification_reserve_send();
        //it is evaded that the data base becomes read-only as a result of the check on the referrer and the method. 
        $request_method =  (isset($_SERVER['REQUEST_METHOD'])) ? $_SERVER['REQUEST_METHOD'] : '';
        $_SERVER['REQUEST_METHOD'] = 'POST';
        require_once $xoops_config->xoops_mainfile_path; //It is necessary to execute it for the user attestation before wp-settings.php. 
        $_SERVER['REQUEST_METHOD'] = $request_method;
        
        unset($offset);         //This Trap is provides the case where $offset is defined on the XOOPS side.
        require_once(ABSPATH.'wp-settings.php');
        
        //When it is not possible to connect it correctly at site home URL on the WordPress side, 
        //URL is corrected based on accessed URL. 
        safe_site_url();

        if (!is_object($xoopsUser)){    // before login auth cookie clear
                wp_logout();
        }
        wp();
        
        //for Event notification update on single post to which link is changed by permalink
        if ( is_404() ) {
                if (!empty($_POST['not_redirect'])) {
                        include '../../mainfile.php';
                        require_once XOOPS_ROOT_PATH.'/include/notification_update.php';
                        exit();
                }
        }
        
        if (!function_exists('is_wordpress_style')){    // When the XPressME plug-in is invalid
                require_once dirname( __FILE__ ).'/xpress_active_plugin.php' ;
                xpress_pulugin_activation('xpressme/xpressme.php');
                // reloaded 
                header('Location: ' . $xoops_config->module_url . '/');
                
                $err_str = "The activation of the XPressME plugin was executed.<br />\n";
                $err_str .= "Because the XPressME plugin was invalid.<br />\n";
                $err_str .= "Please do the rereading seeing on the page.\n";                    
                die($err_str);
        }
        
        Notification_reserve_send();
        ob_start();     
                if (version_compare($xoops_config->wp_version,'2.2', '<'))
                        require_once dirname( __FILE__ ).'/old_template-loader.php' ;
                else
                        require_once( ABSPATH . WPINC . '/template-loader.php' );
                $wp_output = ob_get_contents();
        ob_end_clean();

        //Rendering Select
        if(
                is_wordpress_style()            // When the display mode is WordPress style
                || is_feed()                            // It judges it here because it does in is_index_page() through feed to which the permalink is set.
                || is_iphone_with_wptouch()     // When iPhone access & used wptouch plugin (thx uemu)
        ){
                        echo $wp_output;
        } else {
                        require_once( dirname( __FILE__ ).'/xpress_render.php' );
                        xpress_render($wp_output);
        }

        //When there is no block cache, and an optional block is different, cache is refreshed. 
        //When adding, and changing and deleting Post & Comment, block cache is refreshed by add_action at any time. 
        // This Function in xpressme plugin
        require_once( dirname( __FILE__ ).'/xpress_block_render.php' ); 
        xpress_unnecessary_block_cache_delete($xoops_config->module_name);
        if (is_home()) xpress_block_cache_refresh($xoops_config->module_name);
        exit();         // The return to wp-blog-header.php is stolen here
}
if (is_admin_post_call()) require_once $xoops_config->xoops_mainfile_path;              // for Notification_triggerEvent
if (is_xpress_comments_post_call()) require_once $xoops_config->xoops_mainfile_path;    // for Notification_triggerEvent
?>