Config.php

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<?php
namespace Elgg;


class Config {
    private $CONFIG;

    public function __construct() {
        global $CONFIG;
        $this->CONFIG = $CONFIG;
    }

    function getSiteUrl($site_guid = 0) {
        if ($site_guid == 0) {
            
            return $this->CONFIG->wwwroot;
        }
    
        $site = get_entity($site_guid);
    
        if (!$site instanceof \ElggSite) {
            return false;
        }
        /* @var \ElggSite $site */
    
        return $site->url;
    }
    
    function getPluginsPath() {
        
        return $this->CONFIG->pluginspath;
    }
    
    function getDataPath() {
        
        return $this->CONFIG->dataroot;
    }
    
    function getRootPath() {
        
        return $this->CONFIG->path;
    }
    
    function get($name, $site_guid = 0) {
        
    
        $name = trim($name);
    
        // do not return $CONFIG value if asking for non-current site
        if (($site_guid === 0 || $site_guid === null || $site_guid == $this->CONFIG->site_guid) && isset($this->CONFIG->$name)) {
            return $this->CONFIG->$name;
        }
    
        if ($site_guid === null) {
            // installation wide setting
            $value = _elgg_services()->datalist->get($name);
        } else {
            if ($site_guid == 0) {
                $site_guid = (int) $this->CONFIG->site_guid;
            }
    
            // hit DB only if we're not sure if value isn't already loaded
            if (!isset($this->CONFIG->site_config_loaded) || $site_guid != $this->CONFIG->site_guid) {
                // site specific setting
                $value = _elgg_services()->configTable->get($name, $site_guid);
            } else {
                $value = null;
            }
        }
    
        // @todo document why we don't cache false
        if ($value === false) {
            return null;
        }
    
        if ($site_guid == $this->CONFIG->site_guid || $site_guid === null) {
            $this->CONFIG->$name = $value;
        }
    
        return $value;
    }
    
    function set($name, $value) {
        
    
        $name = trim($name);
    
        $this->CONFIG->$name = $value;
    }
    
    function save($name, $value, $site_guid = 0) {
        
    
        $name = trim($name);
    
        if (strlen($name) > 255) {
            _elgg_services()->logger->error("The name length for configuration variables cannot be greater than 255");
            return false;
        }
    
        if ($site_guid === null) {
            if (is_array($value) || is_object($value)) {
                return false;
            }
            $result = _elgg_services()->datalist->set($name, $value);
        } else {
            if ($site_guid == 0) {
                $site_guid = (int) $this->CONFIG->site_guid;
            }
            $result = _elgg_services()->configTable->set($name, $value, $site_guid);
        }
    
        if ($site_guid === null || $site_guid == $this->CONFIG->site_guid) {
            _elgg_services()->config->set($name, $value);
        }
    
        return $result;
    }
}