vielhuber/index.php

## index.php
<?php
// minimal version
define( 'SHORTINIT', true );
require_once( $_SERVER['DOCUMENT_ROOT'] . '/wp-load.php' );

// medium version (With lots of overhead)
require_once( $_SERVER['DOCUMENT_ROOT'] . '/wp-load.php' );

// full version (including functions and 200 header)
define( 'SHORTINIT', true );
require($_SERVER['DOCUMENT_ROOT'].'/wp-load.php');
require_once($_SERVER['DOCUMENT_ROOT'].'/wp-content/themes/vielhuber/functions.php');
header('HTTP/1.1 200 OK');

// full
define('WP_USE_THEMES', false);
require($_SERVER['DOCUMENT_ROOT'].'/wp-blog-header.php');
header('HTTP/1.1 200 OK');

// full with skeleton
define('WP_USE_THEMES', false);
require($_SERVER['DOCUMENT_ROOT'].'/wp-blog-header.php');
header('HTTP/1.1 200 OK');
echo '<html>';
echo '<head>'; wp_head(); echo '</head>';
echo '<body>';
if( have_posts() ) {
    while( have_posts() ) {
        the_post();
        the_title();
        the_content();
    }
}
wp_footer();
echo '</body>';
echo '</html>';

// warning: some approaches do NOT WORK with the plugin All 404 Redirect to Homepage(!)

// functions.php
/* when loading wordpress externally, it sometimes happen that functions.php is included twice. we prevent this here */
if( !function_exists('prevent_multiple_execution') ) { function prevent_multiple_execution() {}

// ... content of functions.php

}

// functions.php
// this is a another approach (way better) to exclude some plugins on shortinit that cause undefined function errors */
// disable plugins on shortinit (to prevent undefined function errors)
if (defined('SHORTINIT') && SHORTINIT)
{
    add_filter('option_active_plugins', function($plugins)
    {
        $loadplugins = ['some-plugin-you-need'];
        foreach($plugins as $plugins__key => $plugins__value)
        {
            if (!in_array($plugins__value, $loadplugins)) {
                unset($plugins[$plugins__key]);
            }
        }
        return $plugins;
    });
}
	<?php
	// minimal version
	define( 'SHORTINIT', true );
	require_once( $_SERVER['DOCUMENT_ROOT'] . '/wp-load.php' );

	// medium version (With lots of overhead)
	require_once( $_SERVER['DOCUMENT_ROOT'] . '/wp-load.php' );

	// full version (including functions and 200 header)
	define( 'SHORTINIT', true );
	require($_SERVER['DOCUMENT_ROOT'].'/wp-load.php');
	require_once($_SERVER['DOCUMENT_ROOT'].'/wp-content/themes/vielhuber/functions.php');
	header('HTTP/1.1 200 OK');

	// full
	define('WP_USE_THEMES', false);
	require($_SERVER['DOCUMENT_ROOT'].'/wp-blog-header.php');
	header('HTTP/1.1 200 OK');

	// full with skeleton
	define('WP_USE_THEMES', false);
	require($_SERVER['DOCUMENT_ROOT'].'/wp-blog-header.php');
	header('HTTP/1.1 200 OK');
	echo '<html>';
	echo '<head>'; wp_head(); echo '</head>';
	echo '<body>';
	if( have_posts() ) {
	while( have_posts() ) {
	the_post();
	the_title();
	the_content();
	}
	}
	wp_footer();
	echo '</body>';
	echo '</html>';

	// warning: some approaches do NOT WORK with the plugin All 404 Redirect to Homepage(!)

	// functions.php
	/* when loading wordpress externally, it sometimes happen that functions.php is included twice. we prevent this here */
	if( !function_exists('prevent_multiple_execution') ) { function prevent_multiple_execution() {}

	// ... content of functions.php

	}

	// functions.php
	// this is a another approach (way better) to exclude some plugins on shortinit that cause undefined function errors */
	// disable plugins on shortinit (to prevent undefined function errors)
	if (defined('SHORTINIT') && SHORTINIT)
	{
	add_filter('option_active_plugins', function($plugins)
	{
	$loadplugins = ['some-plugin-you-need'];
	foreach($plugins as $plugins__key => $plugins__value)
	{
	if (!in_array($plugins__value, $loadplugins)) {
	unset($plugins[$plugins__key]);
	}
	}
	return $plugins;
	});
	}