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<?php
/**
* @version $Id: gantryurl.class.php 2383 2012-08-15 05:03:39Z btowles $
* @author RocketTheme http://www.rockettheme.com
* @copyright Copyright (C) 2007 - 2016 RocketTheme, LLC
* @license http://www.gnu.org/licenses/gpl-2.0.html GNU/GPLv2 only
*/
defined('GANTRY_VERSION') or die();
/**
* File provides easy way to manipulate url parameters
* @author Alexander Podgorny
*/
class GantryUrl
{
/**
* Splits url into array of it's pieces as follows:
* [scheme]://[user]:[pass]@[host]/[path]?[query]#[fragment]
* In addition it adds 'query_params' key which contains array of
* url-decoded key-value pairs
*
* @param String $sUrl Url
*
* @return Array Parsed url pieces
*/
public static function explode($sUrl)
{
$aUrl = parse_url($sUrl);
$aUrl['query_params'] = array();
$aPairs = array();
if (array_key_exists('query', $aUrl)) {
$aUrl['query'] = preg_replace('/&(?!amp;)/i', '&', $aUrl['query']);
$aPairs = explode('&', $aUrl['query']);
}
foreach ($aPairs as $sPair) {
if (trim($sPair) == '') {
continue;
}
if (strpos($sPair, '=') !== false) {
list($sKey, $sValue) = explode('=', $sPair);
$aUrl['query_params'][$sKey] = urldecode($sValue);
} else {
$aUrl['query_params'][$sPair] = '';
}
}
return $aUrl;
}
/**
* Compiles url out of array of it's pieces (returned by explodeUrl)
* 'query' is ignored if 'query_params' is present
*
* @param Array $aUrl Array of url pieces
*/
public static function implode($aUrl)
{
//[scheme]://[user]:[pass]@[host]/[path]?[query]#[fragment]
$sQuery = '';
// Compile query
if (isset($aUrl['query_params']) && is_array($aUrl['query_params'])) {
$aPairs = array();
foreach ($aUrl['query_params'] as $sKey=> $sValue) {
$kvp = $sKey;
if (!empty($sValue)) {
$kvp .= '=' . urlencode($sValue);
}
$aPairs[] = $kvp;
}
$sQuery = implode('&', $aPairs);
} else {
$sQuery = $aUrl['query'];
}
// Compile url
$sUrl = (isset($aUrl['scheme']) && isset($aUrl['host]']) ? $aUrl['scheme'] . '://' . (isset($aUrl['user']) && $aUrl['user'] != '' && isset($aUrl['pass']) ? $aUrl['user'] . ':' . $aUrl['pass'] . '@' : '') . $aUrl['host'] : '') . (isset($aUrl['path']) && $aUrl['path'] != '' ? $aUrl['path'] : '') . ($sQuery != '' ? '?' . $sQuery : '') . (isset($aUrl['fragment']) && $aUrl['fragment'] != '' ? '#' . $aUrl['fragment'] : '');
return $sUrl;
}
/**
* Parses url and returns array of key-value pairs of url params
*
* @param String $sUrl
*
* @return Array
*/
public static function getParams($sUrl)
{
$aUrl = GantryUrl::explode($sUrl);
return $aUrl['query_params'];
}
/**
* Removes existing url params and sets them to those specified in $aParams
*
* @param String $sUrl Url
* @param Array $aParams Array of Key-Value pairs to set url params to
*
* @return String Newly compiled url
*/
public static function setParams($sUrl, $aParams)
{
$aUrl = GantryUrl::explode($sUrl);
$aUrl['query'] = '';
$aUrl['query_params'] = $aParams;
return GantryUrl::implode($aUrl);
}
/**
* Updates values of existing url params and/or adds (if not set) those specified in $aParams
*
* @param String $sUrl Url
* @param Array $aParams Array of Key-Value pairs to set url params to
*
* @return String Newly compiled url
*/
public static function updateParams($sUrl, $aParams)
{
$aUrl = GantryUrl::explode($sUrl);
$aUrl['query'] = '';
$aUrl['query_params'] = array_merge($aUrl['query_params'], $aParams);
return GantryUrl::implode($aUrl);
}
}