<?php // application/config/concrete.php - overrides concrete/config/concrete.php
return array(
  'filesystem' => array(  // application/files/cache/tmp
    'temp_directory' => DIR_FILES_UPLOADED_STANDARD. '/cache/tmp'),
  'session' => array(     // concrete.session.save_path
    'save_path' => DIR_FILES_UPLOADED_STANDARD. '/cache/tmp',
    'cookie' => array('cookie_path' => DIR_FILES_UPLOADED_STANDARD. '/cache/tmp'))
);

[PHP]
; open_basedir, if set, limits all file operations to the defined directory
; and below.  This directive makes most sense if used in a per-directory
; or per-virtualhost web server configuration file.
; http://php.net/open-basedir
open_basedir = /home/italinux.com/tmp

realpath(): open_basedir restriction in effect. File(/tmp) is not within the allowed path(s): (/home/italinux.com/)

php_value open_basedir "/home/italinux.com/tmp"

php_value open_basedir "/home/italinux.com:/tmp"

<?php
return array(
    'filesystem' => array(
        'temp_directory' => DIR_FILES_UPLOADED_STANDARD . '/cache',
    ),
    'session' => array(
        'handler' => 'database',
        'save_path' => DIR_FILES_UPLOADED_STANDARD . '/cache',
        'cookie' => array(
            'cookie_path' => DIR_FILES_UPLOADED_STANDARD . '/cache',
        ),
    ),
    'external' => array(
        'intelligent_search_help' => true,
        'news_overlay' => false,

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
# Redirect www to NO-www
RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC]
RewriteRule ^(.*)$ http://%1/$1 [R=301,L]
# Pretty URL (no index.php)
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME}/index.html !-f
RewriteCond %{REQUEST_FILENAME}/index.php !-f
RewriteRule . index.php [L]
</IfModule>
php_value open_basedir "/home/italinux.com:/tmp"

[PHP]
;;;;;;;;;;;;;;;;;;;
; About php.ini   ;
;;;;;;;;;;;;;;;;;;;
; PHP's initialization file, generally called php.ini, is responsible for
; configuring many of the aspects of PHP's behavior.
; open_basedir, if set, limits all file operations to the defined directory
; and below.  This directive makes most sense if used in a per-directory
; or per-virtualhost web server configuration file.
; http://php.net/open-basedir
open_basedir = /home/italinux.com/

realpath(): open_basedir restriction in effect. File(/tmp) is not within the allowed path(s): (/home/italinux.com/)

matteo@dellXPS13:/www/sbin$ psi matteo-montanari.com
  PageSpeed Insights with reporting
--------------------------------------------------------
  Today date: 2017/October/04
--------------------------------------------------------
URL:       matteo-montanari.com
Strategy:  mobile
Speed:     69
Usability: 100
CSS size                                   | 335 kB
HTML size                                  | 32.4 kB
Image size                                 | 413 kB
JavaScript size                            | 364 kB
CSS resources                              | 24
Hosts                                      | 2