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<?php

global $acf_stores, $acf_instances;
$acf_stores = array();
$acf_instances = array();
function acf_new_instance($class = '')
{
    global $acf_instances;
    return $acf_instances[$class] = new $class();
}
function acf_get_instance($class = '')
{
    global $acf_instances;
    if (!isset($acf_instances[$class])) {
        $acf_instances[$class] = new $class();
    }
    return $acf_instances[$class];
}
function acf_register_store($name = '', $data = false)
{
    $store = new ACF_Data($data);
    global $acf_stores;
    $acf_stores[$name] = $store;
    return $store;
}
function acf_get_store($name = '')
{
    global $acf_stores;
    return isset($acf_stores[$name]) ? $acf_stores[$name] : false;
}
function acf_switch_stores($site_id, $prev_site_id)
{
    global $acf_stores;
    foreach ($acf_stores as $store) {
        $store->switch_site($site_id, $prev_site_id);
    }
}
add_action('switch_blog', 'acf_switch_stores', 10, 2);
function acf_get_path($filename = '')
{
    return ACF_PATH . ltrim($filename, '/');
}
function acf_get_url($filename = '')
{
    if (!defined('ACF_URL')) {
        define('ACF_URL', acf_get_setting('url'));
    }
    return ACF_URL . ltrim($filename, '/');
}
function acf_include($filename = '')
{
    $file_path = acf_get_path($filename);
    if (file_exists($file_path)) {
        include_once $file_path;
    }
}