{"id":32,"date":"2009-07-03T08:08:14","date_gmt":"2009-07-03T08:08:14","guid":{"rendered":"http:\/\/www.vincenzoscognamiglio.it\/informatica\/variabili-d-ambiente-apache-ed-estensioni-ssi\/"},"modified":"2009-07-03T08:08:14","modified_gmt":"2009-07-03T08:08:14","slug":"variabili-d-ambiente-apache-ed-estensioni-ssi","status":"publish","type":"post","link":"http:\/\/www.vincenzoscognamiglio.it\/informatica\/2009\/07\/03\/variabili-d-ambiente-apache-ed-estensioni-ssi\/","title":{"rendered":"Variabili d’ambiente Apache ed estensioni SSI"},"content":{"rendered":"

Variabili d’ambiente di Apache<\/span><\/h1>\n

Ecco un elenco delle variabili d’ambiente Apache (Environmental Variables) e delle relative estensioni SSI (Server Side Includes).<\/p>\n

Le variabili sono visualizzabili col comando echo <\/em><\/strong>di Apache o #printev<\/strong><\/em> di PHP.<\/p>\n

Attenzione, i nomi delle varibili sono case sensitive.<\/p>\n

GATEWAY_INTERFACE<\/h3>\n

Versione e revisione delle specifiche CGI che il server supporta.<\/p>\n

Esempio: <\/strong><\/em><\/span><\/pre>\n
GATEWAY_INTERFACE=CGI\/1.1 <\/strong><\/em><\/span><\/pre>\n
PATH<\/h3>\n
I percorsi disponibili sul server per il sito web di riferimento<\/p>\n
Esempio: <\/em><\/span><\/strong><\/pre>\n
PATH=\/sbin:\/usr\/sbin:\/bin:\/usr\/bin:\/usr\/X11R6\/bin <\/span><\/strong><\/em><\/pre>\n
<\/a>QUERY_STRING<\/h3>\n
Le eventuali informazioni inviate in querystring.<\/p>\n
Esempio: <\/span><\/strong><\/em><\/pre>\n
chiamando h**ttp:\/\/ilmiosito.it?parola=ciao&valore=10 si ha<\/span><\/strong><\/em><\/pre>\n
QUERY_STRING=parola=ciao&valore=10 si ha<\/span><\/strong><\/em><\/pre>\n
REMOTE_ADDR<\/h3>\n
Restituisce l’indirizzo IP dell’host che sta realizzando la richiesta.<\/p>\n
Esempio: <\/span><\/em><\/strong><\/pre>\n
REMOTE_ADDR=207.35.76.27 <\/span><\/em><\/strong><\/pre>\n
REMOTE_PORT<\/h3>\n
Il numero di porta usato dall’host remoto che realizza la richiesta<\/p>\n
Esempio:
\n<\/span><\/strong><\/em><\/p>\n
REMOTE_PORT=4325 <\/span><\/strong><\/em><\/pre>\n
REQUEST_METHOD<\/h3>\n
Il metodo usato dall’host remoto che realizza la richiesta (GET, HEAD, POST)<\/p>\n
Esempio:<\/span><\/em><\/strong><\/p>\n
REQUEST_METHOD=POST <\/span><\/em><\/strong><\/pre>\n
REQUEST_URI<\/h3>\n
La URI della richiesta (relativamente alla DOCUMENT_ROOT)<\/p>\n
Esempio: <\/span><\/em><\/strong><\/pre>\n
REQUEST_URI=\/vs\/web\/variabili.htm <\/span><\/em><\/strong><\/pre>\n
SCRIPT_FILENAME<\/h3>\n
Il percorso dello script in esecuzione(relativamente alla DOCUMENT_ROOT)<\/p>\n
Esempio:
\n<\/span><\/em><\/strong><\/p>\n
SCRIPT_FILENAME=\/tech\/web\/ssi.htm <\/span><\/em><\/strong><\/pre>\n
SCRIPT_NAME<\/h3>\n
Il nome dello script in esecuzione(relativamente alla DOCUMENT_ROOT)<\/p>\n
Esempio: <\/em><\/strong><\/span><\/p>\n
SCRIPT_NAME=\/tech\/web\/ssi.htm <\/em><\/strong><\/span><\/pre>\n
SERVER_ADDR<\/h3>\n
L’indirizzo IP del server dell’URL chiamato<\/p>\n
Esempio: <\/strong><\/em><\/span><\/pre>\n
SERVER_ADDR=207.35.76.24 <\/strong><\/em><\/span><\/p>\n
SERVER_ADMIN<\/h3>\n
L’indirizzo email dell’amministratore del server<\/p>\n
Esempio: \u00a0<\/span><\/strong><\/em><\/pre>\n
SERVER_ADMIN=webmaster@zytrax.com <\/span><\/strong><\/em><\/pre>\n
SERVER_NAME<\/h3>\n
The servers host name, DNS alias or IP address. For Apache the name appearing on the relevant ServerName directive (may be in the general section or a <virtualhost> section e.g.<\/p>\n
SERVER_NAME=www.zytrax.com<\/pre>\n
SERVER_PORT<\/h3>\n
The port number on this server to which this request was directed e.g.<\/p>\n
SERVER_PORT=80<\/pre>\n
SERVER_PROTOCOL<\/h3>\n
The name and revision of the protocol that delivered the current request e.g.<\/p>\n
SERVER_PROTOCOL=HTTP\/1.1<\/pre>\n
SERVER_SIGNATURE<\/h3>\n
The HTML string that may be embedded in the page to identify this host e.g.<\/p>\n
SERVER_SIGNATURE=<ADDRESS>Apache\/1.3.14 Server at www.zytrax.com Port 80<\/ADDRESS><\/pre>\n
SERVER_SOFTWARE<\/h3>\n
The name and version of the information server answering the query e.g.<\/p>\n
SERVER_SOFTWARE=Apache\/1.3.14 (Unix) (Red-Hat\/Linux) PHP\/4.0.3pl1<\/pre>\n
HTTP Header Variables<\/h1>\n
The following variables are constructed from the HTTP header information supplied by the requestor.<\/p>\n
HTTP_ACCEPT<\/h3>\n
The MIME types the requestor will accept as defined in the HTTP header e.g.<\/p>\n
HTTP_ACCEPT=*\/*<\/pre>\n
HTTP_ACCEPT_ENCODING<\/h3>\n
The MIME types the requestor will accept as defined in the HTTP header e.g.<\/p>\n
HTTP_ACCEPT_ENCODING=gzip, deflate<\/pre>\n
HTTP_ACCEPT_LANGUAGE<\/h3>\n
The LANGUAGE types the server is requested to accept as defined in the HTTP header and typically used for content negotiation e.g.<\/p>\n
HTTP_ACCEPT_LANGUAGE=en-us<\/pre>\n
HTTP_CONNECTION<\/h3>\n
The type of connection as defined in the HTTP header e.g.<\/p>\n
HTTP_CONNECTION=Keep-Alive<\/pre>\n
HTTP_COOKIE<\/h3>\n
The value of any cookie in the HTTP header. Standard cookie formats are defined by RFC 2965 (Set-Cookie2 header) and the older (non-standard) netscape cookie format<\/a>.<\/p>\n
HTTP_HOST<\/h3>\n
The base URL of the host e.g.<\/p>\n
HTTP_HOST=www.zytrax.com<\/pre>\n
HTTP_REFERER<\/h3>\n
The URL of the page that made this request. If linked from e-mail or manually entered this value is NULL.<\/p>\n
HTTP_REFERER=http:\/\/www.zytrax.com\/tech\/web\/<\/pre>\n
HTTP_USER_AGENT<\/h3>\n
The browser id or user-agent string identifying the browser (nominally defined by RFC 1945 and RFC 2068). See here<\/a> for our current list.<\/p>\n
HTTP_USER_AGENT=Mozilla\/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)<\/pre>\n
SSI Extensions<\/h1>\n
This section defines the additional variables made available by SSI.<\/p>\n
DATE_GMT<\/h3>\n
The current date and time in Greenwich Mean Time (now Unviversal Co-ordinated Time (UCT) in the default or #config defined format).<\/p>\n
DATE_GMT=Thursday, 03-May-2001 21:18:54 GMT<\/pre>\n
DATE_LOCAL<\/h3>\n
The current date and time in the local (server) timezone (in the default or #config defined format).<\/p>\n
DATE_LOCAL=Thursday, 03-May-2001 17:18:54 EDT<\/pre>\n
DOCUMENT_ROOT<\/h3>\n
The root directory of this site defined by the ‘DocumentRoot’ directive in the General Section or a <virtualhost> section e.g.<\/p>\n
DOCUMENT_ROOT=\/var\/www\/zytrax<\/pre>\n
DOCUMENT_NAME<\/h3>\n
The file name (excludes directories) of the document requested by the user e.g.<\/p>\n
DOCUMENT_NAME=ssi.htm<\/pre>\n
DOCUMENT_PATH_INFO<\/h3>\n
Not well documented but it seems that if there is query string information following the URL (starts with a ‘?’), for instance, ..\/index.html?x=a, the data (x=a) is placed in QUERY_STRING. If the additional data starts with a \/, for instance, ..\/index.html\/path?x=a the data (path?x=a) is placed in the DOCUMENT_INFO_PATH variable. Apache 2.x allows the behaviour to be controlled using the AcceptPathInfo directive<\/p>\n
DOCUMENT_PATH_INFO=<\/pre>\n
DOCUMENT_URI<\/h3>\n
The URL path of the document requested by the user e.g.<\/p>\n
DOCUMENT_URI=\/tech\/web\/ssi.htm<\/pre>\n
LAST_MODIFIED<\/h3>\n
The last modification date of the document (file) requested by the user (in the default or #config defined format). This variable is not changed for  SSI included files<\/a>.<\/p>\n
LAST_MODIFIED=Thursday, 03-May-2001 17:18:45 EDT<\/pre>\n
USER_NAME<\/h3>\n
The user name of the web site in which this web site runs e.g.<\/p>\n
USER_NAME=zytrax<\/pre>\n","protected":false},"excerpt":{"rendered":"
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