Server Variables displayed via PHP

AUTH_TYPEclient authorization method
CONTENT_LENGTHsize of input posted from client
CONTENT_TYPEMIME type of content
DATE_GMTcurrent GMT
DATE_LOCALcurrent local time and date
DOCUMENT_NAMEdocument name that was requested
DOCUMENT_URLURL of the document
LAST_MODIFIEDdocument modified date
PAGE_COUNTnumber of accesses to current document since server was brought on line
HTTP_REFERERURL of the document the client came from
HTTP_USER_AGENTID string of web browser
REMOTE_ADDRnumeric IP address of the client
REMOTE_HOSTdomain name of the client (if reverse lookup turned on)
REMOTE_USERID of user, rarely ever found
REQUEST_METHODHTTP method: GET OR POST
SERVER_NAMEserver hostname
SERVER_PORTthe port used by httpd
SERVER_PROTOCOLversion of httpd compliance
SERVER_SOFTWAREname of the server software
TOTAL_HITStotal number of pages served by server since brought on line