105 lines
3.2 KiB
PHP
105 lines
3.2 KiB
PHP
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<?php
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/**
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* Generic Server-Side Google Analytics PHP Client
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License (LGPL) as published by the Free Software Foundation; either
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* version 3 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*
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* Google Analytics is a registered trademark of Google Inc.
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*
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* @link http://code.google.com/p/php-ga
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*
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* @license http://www.gnu.org/licenses/lgpl.html
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* @author Thomas Bachem <tb@unitedprototype.com>
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* @copyright Copyright (c) 2010 United Prototype GmbH (http://unitedprototype.com)
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*/
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namespace UnitedPrototype\GoogleAnalytics\Internals;
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/**
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* @link http://code.google.com/p/gaforflash/source/browse/trunk/src/com/google/analytics/core/Utils.as
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*/
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class Util {
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/**
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* This class does only have public static methods, no instantiation necessary
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*/
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private function __construct() { }
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/**
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* Mimics Javascript's encodeURIComponent() function for consistency with the GA Javascript client.
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*
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* @param mixed $value
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* @return string
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*/
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public static function encodeUriComponent($value) {
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return static::convertToUriComponentEncoding(rawurlencode($value));
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}
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/**
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* Here as a separate method so it can also be applied to e.g. a http_build_query() result.
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*
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* @link http://stackoverflow.com/questions/1734250/what-is-the-equivalent-of-javascripts-encodeuricomponent-in-php/1734255#1734255
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* @link http://devpro.it/examples/php_js_escaping.php
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*
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* @param string $encodedValue
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* @return string
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*/
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public static function convertToUriComponentEncoding($encodedValue) {
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return str_replace(array('%21', '%2A', '%27', '%28', '%29'), array('!', '*', "'", '(', ')'), $encodedValue);
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}
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/**
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* Generates a 32bit random number.
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*
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* @link http://code.google.com/p/gaforflash/source/browse/trunk/src/com/google/analytics/core/Utils.as#33
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* @return int
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*/
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public static function generate32bitRandom() {
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return round((rand() / getrandmax()) * 0x7fffffff);
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}
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/**
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* Generates a hash for input string.
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*
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* @link http://code.google.com/p/gaforflash/source/browse/trunk/src/com/google/analytics/core/Utils.as#44
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* @param string $string
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* @return int
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*/
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public static function generateHash($string) {
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$string = (string)$string;
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$hash = 1;
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if($string !== null && $string !== '') {
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$hash = 0;
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$length = strlen($string);
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for($pos = $length - 1; $pos >= 0; $pos--) {
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$current = ord($string[$pos]);
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$hash = (($hash << 6) & 0xfffffff) + $current + ($current << 14);
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$leftMost7 = $hash & 0xfe00000;
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if($leftMost7 != 0) {
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$hash ^= $leftMost7 >> 21;
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}
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}
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}
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return $hash;
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}
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}
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?>
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