From Joomla! Documentation
The "API16" namespace is an archived namespace. This page contains information for a Joomla! version which is no longer supported. It exists only as a historical reference, it will not be improved and its content may be incomplete and/or contain broken links.
JURI provides a number of methods and properties for handling Uniform Resource Identifiers (URIs). It also provides a means of obtaining the URI of the current request regardless of the web server on which Joomla is running.
The formal structure of a URI is defined in RFC3986 and the following is an example taken from that document:
foo://example.com:8042/over/there?name=ferret#nose \_/ \______________/\_________/ \_________/ \__/ | | | | | scheme authority path query fragment
The scheme and path components are required, though the path may be empty (no characters). When authority is present, the path must either be empty or begin with a slash ("/") character. When authority is not present, the path cannot begin with two slash characters ("//").
The scheme usually specifies the internet protocol that is to be used to access the resource. For example, 'http' indicates that the HyperText Transfer Protocol is to be used.
The authority field can be sub-divided into user information, host and port number parts. The user information part allows a URI to contain authentication information, usually in the form 'username:password', although this format is deprecated as "The passing of authentication information in clear text has proven to be a security risk in almost every case where it has been used." However, as URIs containing authentication information are still available on the internet, the JURI class will continue to support the generation and parsing of user authentication information.
The query part may contain multiple items, separated by '&' characters.
The JURI class effectively provides a wrapper around the PHP parse_url function.
|__construct||Constructor. You can pass a URI string to the constructor to initialise a specific URI.|
|__toString||Magic method to get the string representation of the URI object.|
|parse||Parse a given URI and populate the class fields.|
|toString||Returns full uri string.|
|setVar||Adds a query variable and value, replacing the value if it already exists and returning the old value.|
|getVar||Returns a query variable by name.|
|delVar||Removes an item from the query string variables if it exists.|
|setQuery||Sets the query to a supplied string in format: foo=bar&x=y|
|getQuery||Returns flat query string.|
|buildQuery||Build a query from a array (reverse of the PHP parse_str()).|
|getScheme||Get URI scheme (protocol) ie. http, https, ftp, etc...|
|setScheme||Set URI scheme (protocol) ie. http, https, ftp, etc...|
|getUser||Get URI username returns the username, or null if no username was specified.|
|setUser||Set URI username.|
|getPass||Get URI password returns the password, or null if no password was specified.|
|setPass||Set URI password.|
|getHost||Get URI host returns the hostname/ip, or null if no hostname/ip was specified.|
|setHost||Set URI host.|
|getPort||Get URI port returns the port number, or null if no port was specified.|
|setPort||Set URI port.|
|getPath||Gets the URI path string.|
|setPath||Set the URI path string.|
|getFragment||Get the URI archor string everything after the "#".|
|setFragment||Set the URI anchor string everything after the "#".|
|isSSL||Checks whether the current URI is using HTTPS.|
|isInternal||Checks if the supplied URL is internal|
|getInstance||Returns the global JURI object, only creating it if it doesn't already exist.|
|base||Returns the base URI for the request.|
|root||Returns the root URI for the request.|
|current||Returns the URL for the request, minus the query.|
jimport( 'joomla.environment.uri' );
(The text of this page has been subsumed into the article URLs in Joomla).