<?php

// Files that are needed that aren't classes, as well as basic initialization
// Core requirements
define('IN_SCRIPT', 1);
define('HESK_PATH', '../');
require_once(__DIR__ . '/vendor/autoload.php');
require_once(__DIR__ . '/bootstrap.php');
require_once(__DIR__ . '/../hesk_settings.inc.php');
require_once(__DIR__ . '/../inc/common.inc.php');
require_once(__DIR__ . '/Core/output.php');
require_once(__DIR__ . '/../hesk_settings.inc.php');
require_once(__DIR__ . '/http_response_code.php');
require_once(__DIR__ . '/../inc/admin_functions.inc.php');

hesk_load_api_database_functions();

global $hesk_settings;

// HESK files that require database access
require_once(__DIR__ . '/../inc/custom_fields.inc.php');

// Load the ApplicationContext
$builder = new \DI\ContainerBuilder();

$applicationContext = $builder->build();

// Fix for getallheaders() on PHP-FPM and nginx
if (!function_exists('getallheaders')) {
    function getallheaders() {
        $headers = [];
        foreach ($_SERVER as $name => $value) {
            if (substr($name, 0, 5) == 'HTTP_') {
                $headers[str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))))] = $value;
            }
        }
        return $headers;
    }
}
<?php

// Files that are needed that aren't classes, as well as basic initialization
// Core requirements
define('IN_SCRIPT', 1);
define('HESK_PATH', '../');
require_once(__DIR__ . '/vendor/autoload.php');
require_once(__DIR__ . '/bootstrap.php');
require_once(__DIR__ . '/../hesk_settings.inc.php');
require_once(__DIR__ . '/../inc/common.inc.php');
require_once(__DIR__ . '/Core/output.php');
require_once(__DIR__ . '/../hesk_settings.inc.php');
require_once(__DIR__ . '/http_response_code.php');
require_once(__DIR__ . '/../inc/admin_functions.inc.php');

hesk_load_api_database_functions();

global $hesk_settings;

// HESK files that require database access
require_once(__DIR__ . '/../inc/custom_fields.inc.php');

// Load the ApplicationContext
$builder = new \DI\ContainerBuilder();

$applicationContext = $builder->build();

// Fix for getallheaders() on PHP-FPM and nginx
if (!function_exists('getallheaders')) {
    function getallheaders() {
        $headers = array();
        foreach ($_SERVER as $name => $value) {
            if (substr($name, 0, 5) == 'HTTP_') {
                $headers[str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))))] = $value;
            }
        }
        return $headers;
    }
}
Fix issue in PHP 5.3
Fix issue in PHP 5.3
