Ciao a tutti, ho configurato un server apache e questo è il risultato del phpinfo

PHP Version 5.4.4-14+deb7u14

System Linux debian7 3.2.0-4-686-pae #1 SMP Debian 3.2.60-1+deb7u3 i686
Build Date Aug 21 2014 09:48:18
Server API Apache 2.0 Handler
Virtual Directory Support disabled
Configuration File (php.ini) Path /etc/php5/apache2
Loaded Configuration File /etc/php5/apache2/php.ini
Scan this dir for additional .ini files /etc/php5/apache2/conf.d
Additional .ini files parsed /etc/php5/apache2/conf.d/10-pdo.ini, /etc/php5/apache2/conf.d/20-curl.ini, /etc/php5/apache2/conf.d/20-gd.ini, /etc/php5/apache2/conf.d/20-imap.ini, /etc/php5/apache2/conf.d/20-intl.ini, /etc/php5/apache2/conf.d/20-mcrypt.ini, /etc/php5/apache2/conf.d/20-memcache.ini, /etc/php5/apache2/conf.d/20-mysql.ini, /etc/php5/apache2/conf.d/20-mysqli.ini, /etc/php5/apache2/conf.d/20-pdo_mysql.ini, /etc/php5/apache2/conf.d/20-pdo_sqlite.ini, /etc/php5/apache2/conf.d/20-pspell.ini, /etc/php5/apache2/conf.d/20-recode.ini, /etc/php5/apache2/conf.d/20-snmp.ini, /etc/php5/apache2/conf.d/20-sqlite3.ini, /etc/php5/apache2/conf.d/20-tidy.ini, /etc/php5/apache2/conf.d/20-xmlrpc.ini, /etc/php5/apache2/conf.d/20-xsl.ini, /etc/php5/apache2/conf.d/imagick.ini, /etc/php5/apache2/conf.d/ming.ini, /etc/php5/apache2/conf.d/ps.ini
PHP API 20100412
PHP Extension 20100525
Zend Extension 220100525
Zend Extension Build API220100525,NTS
PHP Extension Build API20100525,NTS
Debug Build no
Thread Safety disabled
Zend Signal Handling disabled
Zend Memory Manager enabled
Zend Multibyte Support provided by mbstring
IPv6 Support enabled
DTrace Support disabled
Registered PHP Streams https, ftps, compress.zlib, compress.bzip2, php, file, glob, data, http, ftp, phar, zip
Registered Stream Socket Transports tcp, udp, unix, udg, ssl, sslv3, tls
Registered Stream Filters zlib.*, bzip2.*, convert.iconv.*, string.rot13, string.toupper, string.tolower, string.strip_tags, convert.*, consumed, dechunk, mcrypt.*, mdecrypt.*

se ispeziono l'elemento nel server di una pagina php questo è il risultato:

<link rel="stylesheet" href="<!--URL-->css/foundation.css" />
<script src="<!--URL-->js/vendor/modernizr.js"></script>
<script src="<!--URL-->js/vendor/jquery.js"></script>
<script src="<!--URL-->js/foundation/foundation.js"></script>

la stessa pagina caricata in altro server apache ispezionata fornisce questo risultato:

<link rel="stylesheet" href="http://miosito/css/foundation.css" />
<script src="http://miosito/js/vendor/modernizr.js"></script>
<script src="http://miosito/js/vendor/jquery.js"></script>
<script src="http://miosito/js/foundation/foundation.js"></script>

quale potrebbe essere il motivo?

Grazie.