Viewing file:  PathVars.php (3.2 KB) -rw-rw-rw-
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<?php
/**
* @package SPLIB
* @version $Id: PathVars.php,v 1.1 2003/12/12 08:06:02 kevin Exp $
*/
/**
* PathVars Class
* Extracts scalar variables from URL like<br />
* http://localhost/index.php/these/are/variables/
* <code>
* // Url is http://localhost/index.php/forum/view/1
* $pathVars = new PathVars('index.php');
* echo ( $pathVars->fetchByIndex(1) ); // Displays 'view'
* </code>
* @access public
* @package SPLIB
*/
class PathVars {
/**
* The baseUrl of the script receiving the URL
* @access private
* @var string
*/
var $baseUrl;
/**
* The fragment of the URL after the baseUrl
* @access private
* @var string
*/
var $fragment;
/**
* The variables extracted from the fragment
* @access private
* @var string
*/
var $pathVars;
/**
* PathVars constructor
* @param string receiving script url
* @access public
*/
function PathVars ($baseUrl) {
$this->baseUrl=$baseUrl;
$this->pathVars=array();
$this->fetchFragment();
$this->parseFragment();
}
/**
* Strips out $this->baseUrl from $_SERVER['REQUEST_URI']
* @return void
* @access private
*/
function fetchFragment () {
if ( !strstr($_SERVER['REQUEST_URI'],$this->baseUrl) )
trigger_error ('$baseUrl is invalid: '.$this->baseUrl );
if ( $this->baseUrl != '/' )
$this->fragment=str_replace($this->baseUrl,'',$_SERVER['REQUEST_URI']);
else
$this->fragment=$_SERVER['REQUEST_URI'];
}
/**
* Parses the fragment into variables
* @return void
* @access private
*/
function parseFragment () {
if ( strstr ($this->fragment,'/') ) {
$vars=explode('/',$this->fragment);
foreach ($vars as $var) {
if ( $var == '' )
continue;
if ( strstr ($var,'=') )
continue;
if ( strstr ($var,'&') )
continue;
if ( strstr ($var,'?') )
continue;
$this->pathVars[]=$var;
}
}
}
/**
* Iterator for path vars
* @return mixed
* @access public
*/
function fetch () {
$var = each ( $this->pathVars );
if ( $var ) {
return $var['value'];
} else {
reset ( $this->pathVars );
return false;
}
}
/**
* Returns $this->pathVars
* @return array
* @access public
*/
function fetchAll () {
return $this->pathVars;
}
/**
* Return a value from $this->pathVars given it's index
* @param int the index of this->pathVars to return
* @return string
* @access public
*/
function fetchByIndex ($index) {
if ( isset ($this->pathVars[$index]) )
return $this->pathVars[$index];
else
return false;
}
/**
* Returns the number of variables found
* @return int
* @access public
*/
function size () {
return count ( $this->pathVars );
}
}
?>
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