Refactor project structure
This commit is contained in:
Thilina Hasantha
75
core/src/Utils/CalendarTools.php
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75
core/src/Utils/CalendarTools.php
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@@ -0,0 +1,75 @@
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<?php
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namespace Utils;
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class CalendarTools
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{
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const MODE_MONTH = "MONTH";
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const MODE_WEEK = "WEEK";
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const MODE_DAY = "DAY";
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public static function getCalendarMode($start, $end)
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{
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$diff = (intval($end) - intval($start)) / (60 * 60 * 24);
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if ($diff > 8) {
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return CalendarTools::MODE_MONTH;
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} elseif ($diff > 2) {
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return CalendarTools::MODE_WEEK;
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} else {
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return CalendarTools::MODE_DAY;
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}
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}
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public static function addLeadingZero($val)
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{
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if ($val < 10) {
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$val = "0" . $val;
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}
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return $val;
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}
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public static function getTimeDiffInHours($start, $end)
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{
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$diff = strtotime($end) - strtotime($start);
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$hours = round($diff/(3600), 2);
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return $hours;
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}
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public static function getDaysBetweenDates($start, $end)
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{
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$begin = new \DateTime($start);
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$end = new \DateTime($end);
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$end = $end->add(\DateInterval::createFromDateString('1 day'));
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$interval = \DateInterval::createFromDateString('1 day');
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$period = new \DatePeriod($begin, $interval, $end);
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$days = array();
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foreach ($period as $dt) {
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$days[] = $dt;
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}
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return $days;
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}
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public static function addMinutesToDateTime($datetime, $minutes, $format = 'Y-m-d H:i:s')
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{
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$time = new \DateTime($datetime);
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$time = $time->add(new \DateInterval('PT' . $minutes . 'M'));
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return $time->format($format);
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}
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public static function addMonthsToDateTime($datetime, $months, $format = 'Y-m-d H:i:s')
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{
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$time = new \DateTime($datetime);
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$time = $time->add(new \DateInterval('P' . $months . 'M'));
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return $time->format($format);
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}
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public static function getNumberOfDaysBetweenDates($first, $second)
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{
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$timeFirst = new \DateTime($first);
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$timeSecond = new \DateTime($second);
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$interval = $timeSecond->diff($timeFirst);
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return intval($interval->format('%a'));
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}
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}
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33
core/src/Utils/InputCleaner.php
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33
core/src/Utils/InputCleaner.php
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@@ -0,0 +1,33 @@
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<?php
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namespace Utils;
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class InputCleaner
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{
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public static function cleanParameters($input)
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{
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foreach ($input as $key => $value) {
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$cleaned = self::cleanParameter($value);
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$input[$key] = $cleaned;
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}
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return $input;
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}
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public static function cleanParameter($val)
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{
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$val = strip_tags($val, TAGS_TO_PRESERVE);
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/*
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/ # Start Pattern
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< # Match '<' at beginning of tags
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( # Start Capture Group $1 - Tag Name
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[a-z] # Match 'a' through 'z'
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[a-z0-9]* # Match 'a' through 'z' or '0' through '9' zero or more times
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) # End Capture Group
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[^>]*? # Match anything other than '>', Zero or More times, not-greedy (wont eat the /)
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(\/?) # Capture Group $2 - '/' if it is there
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> # Match '>'
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/i # End Pattern - Case Insensitive
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*/
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$val = preg_replace("/<([a-z][a-z0-9]*)[^>]*?(\/?)>/i", '<$1$2>', $val);
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return $val;
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}
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}
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46
core/src/Utils/LogManager.php
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46
core/src/Utils/LogManager.php
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@@ -0,0 +1,46 @@
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<?php
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namespace Utils;
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use Monolog\Logger;
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use Monolog\Handler\StreamHandler;
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class LogManager
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{
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private static $me;
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private $log;
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private function __construct()
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{
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}
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public static function getInstance()
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{
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if (empty(self::$me)) {
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self::$me = new LogManager();
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self::$me->log = new Logger(APP_NAME);
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if (is_writable(ini_get('error_log'))) {
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self::$me->log->pushHandler(new StreamHandler(ini_get('error_log'), LOG_LEVEL));
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} elseif (is_writable(CLIENT_BASE_PATH.'data/app.log')) {
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self::$me->log->pushHandler(new StreamHandler(CLIENT_BASE_PATH.'data/app.log', LOG_LEVEL));
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}
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}
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return self::$me;
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}
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public function info($message)
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{
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$this->log->addInfo($message);
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}
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public function debug($message)
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{
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$this->log->addDebug($message);
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}
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public function error($message)
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{
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$this->log->addError($message);
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}
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}
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422
core/src/Utils/Math/EvalMath.php
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422
core/src/Utils/Math/EvalMath.php
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@@ -0,0 +1,422 @@
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<?php
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/*
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================================================================================
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EvalMath - PHP Class to safely evaluate math expressions
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Copyright (C) 2005 Miles Kaufmann <http://www.twmagic.com/>
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================================================================================
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NAME
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EvalMath - safely evaluate math expressions
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SYNOPSIS
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<?
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include('evalmath.class.php');
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$m = new EvalMath;
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// basic evaluation:
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$result = $m->evaluate('2+2');
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// supports: order of operation; parentheses; negation; built-in functions
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$result = $m->evaluate('-8(5/2)^2*(1-sqrt(4))-8');
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// create your own variables
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$m->evaluate('a = e^(ln(pi))');
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// or functions
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$m->evaluate('f(x,y) = x^2 + y^2 - 2x*y + 1');
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// and then use them
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$result = $m->evaluate('3*f(42,a)');
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?>
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DESCRIPTION
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Use the EvalMath class when you want to evaluate mathematical expressions
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from untrusted sources. You can define your own variables and functions,
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which are stored in the object. Try it, it's fun!
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METHODS
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$m->evalute($expr)
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Evaluates the expression and returns the result. If an error occurs,
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prints a warning and returns false. If $expr is a function assignment,
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returns true on success.
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$m->e($expr)
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A synonym for $m->evaluate().
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$m->vars()
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Returns an associative array of all user-defined variables and values.
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$m->funcs()
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Returns an array of all user-defined functions.
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PARAMETERS
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$m->suppress_errors
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Set to true to turn off warnings when evaluating expressions
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$m->last_error
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If the last evaluation failed, contains a string describing the error.
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(Useful when suppress_errors is on).
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AUTHOR INFORMATION
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Copyright 2005, Miles Kaufmann.
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LICENSE
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1 Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. The name of the author may not be used to endorse or promote
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products derived from this software without specific prior written
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permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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namespace Utils\Math;
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class EvalMath
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{
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public $suppress_errors = false;
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public $last_error = null;
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protected $v = array('e'=>2.71,'pi'=>3.14); // variables (and constants)
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protected $f = array(); // user-defined functions
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protected $vb = array('e', 'pi'); // constants
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protected $fb = array( // built-in functions
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'sin','sinh','arcsin','asin','arcsinh','asinh',
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'cos','cosh','arccos','acos','arccosh','acosh',
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'tan','tanh','arctan','atan','arctanh','atanh',
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'sqrt','abs','ln','log');
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public function __construct()
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{
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// make the variables a little more accurate
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$this->v['pi'] = pi();
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$this->v['e'] = exp(1);
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}
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public function e($expr)
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{
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return $this->evaluate($expr);
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}
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public function evaluate($expr)
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{
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$this->last_error = null;
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$expr = trim($expr);
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if (substr($expr, -1, 1) == ';') {
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$expr = substr($expr, 0, strlen($expr)-1); // strip semicolons at the end
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}
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//===============
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// is it a variable assignment?
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if (preg_match('/^\s*([a-z]\w*)\s*=\s*(.+)$/', $expr, $matches)) {
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if (in_array($matches[1], $this->vb)) { // make sure we're not assigning to a constant
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return $this->trigger("cannot assign to constant '$matches[1]'");
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}
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if (($tmp = $this->pfx($this->nfx($matches[2]))) === false) {
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return false; // get the result and make sure it's good
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}
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$this->v[$matches[1]] = $tmp; // if so, stick it in the variable array
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return $this->v[$matches[1]]; // and return the resulting value
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//===============
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// is it a function assignment?
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} elseif (preg_match(
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'/^\s*([a-z]\w*)\s*\(\s*([a-z]\w*(?:\s*,\s*[a-z]\w*)*)\s*\)\s*=\s*(.+)$/',
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$expr,
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$matches
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)
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) {
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$fnn = $matches[1]; // get the function name
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if (in_array($matches[1], $this->fb)) { // make sure it isn't built in
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return $this->trigger("cannot redefine built-in function '$matches[1]()'");
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}
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$args = explode(",", preg_replace("/\s+/", "", $matches[2])); // get the arguments
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if (($stack = $this->nfx($matches[3])) === false) {
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return false; // see if it can be converted to postfix
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}
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for ($i = 0; $i<count($stack); $i++) { // freeze the state of the non-argument variables
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$token = $stack[$i];
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if (preg_match('/^[a-z]\w*$/', $token) and !in_array($token, $args)) {
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if (array_key_exists($token, $this->v)) {
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$stack[$i] = $this->v[$token];
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} else {
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return $this->trigger("undefined variable '$token' in function definition");
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}
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}
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}
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$this->f[$fnn] = array('args'=>$args, 'func'=>$stack);
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return true;
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//===============
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} else {
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return $this->pfx($this->nfx($expr)); // straight up evaluation, woo
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}
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}
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public function vars()
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{
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$output = $this->v;
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unset($output['pi']);
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unset($output['e']);
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return $output;
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}
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public function funcs()
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{
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$output = array();
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foreach ($this->f as $fnn => $dat) {
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$output[] = $fnn . '(' . implode(',', $dat['args']) . ')';
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}
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return $output;
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}
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//===================== HERE BE INTERNAL METHODS ====================\\
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// Convert infix to postfix notation
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private function nfx($expr)
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{
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$index = 0;
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$stack = new EvalMathStack;
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$output = array(); // postfix form of expression, to be passed to pfx()
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$expr = trim(strtolower($expr));
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$ops = array('+', '-', '*', '/', '^', '_');
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$ops_r = array('+'=>0,'-'=>0,'*'=>0,'/'=>0,'^'=>1); // right-associative operator?
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$ops_p = array('+'=>0,'-'=>0,'*'=>1,'/'=>1,'_'=>1,'^'=>2); // operator precedence
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$expecting_op = false; // we use this in syntax-checking the expression
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// and determining when a - is a negation
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if (preg_match("/[^\w\s+*^\/()\.,-]/", $expr, $matches)) { // make sure the characters are all good
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return $this->trigger("illegal character '{$matches[0]}'");
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}
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while (1) { // 1 Infinite Loop ;)
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$op = substr($expr, $index, 1); // get the first character at the current index
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// find out if we're currently at the beginning of a number/variable/function/parenthesis/operand
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$ex = preg_match('/^([a-z]\w*\(?|\d+(?:\.\d*)?|\.\d+|\()/', substr($expr, $index), $match);
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//===============
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if ($op == '-' and !$expecting_op) { // is it a negation instead of a minus?
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$stack->push('_'); // put a negation on the stack
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$index++;
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} elseif ($op == '_') { // we have to explicitly deny this, because it's legal on the stack
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return $this->trigger("illegal character '_'"); // but not in the input expression
|
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//===============
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} elseif ((in_array($op, $ops) or $ex) and $expecting_op) {
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// are we putting an operator on the stack?
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if ($ex) { // are we expecting an operator but have a number/variable/function/opening parethesis?
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$op = '*';
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$index--; // it's an implicit multiplication
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}
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// heart of the algorithm:
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while ($stack->count > 0 and ($o2 = $stack->last()) and in_array($o2, $ops)
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and ($ops_r[$op] ? $ops_p[$op] < $ops_p[$o2] : $ops_p[$op] <= $ops_p[$o2])) {
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$output[] = $stack->pop(); // pop stuff off the stack into the output
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}
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// many thanks: http://en.wikipedia.org/wiki/Reverse_Polish_notation#The_algorithm_in_detail
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$stack->push($op); // finally put OUR operator onto the stack
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$index++;
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$expecting_op = false;
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//===============
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} elseif ($op == ')' and $expecting_op) { // ready to close a parenthesis?
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while (($o2 = $stack->pop()) != '(') { // pop off the stack back to the last (
|
||||
if (is_null($o2)) {
|
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return $this->trigger("unexpected ')'");
|
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} else {
|
||||
$output[] = $o2;
|
||||
}
|
||||
}
|
||||
if (preg_match("/^([a-z]\w*)\($/", $stack->last(2), $matches)) { // did we just close a function?
|
||||
$fnn = $matches[1]; // get the function name
|
||||
$arg_count = $stack->pop(); // see how many arguments there were
|
||||
// (cleverly stored on the stack, thank you)
|
||||
$output[] = $stack->pop(); // pop the function and push onto the output
|
||||
if (in_array($fnn, $this->fb)) { // check the argument count
|
||||
if ($arg_count > 1) {
|
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return $this->trigger("too many arguments ($arg_count given, 1 expected)");
|
||||
}
|
||||
} elseif (array_key_exists($fnn, $this->f)) {
|
||||
if ($arg_count != count($this->f[$fnn]['args'])) {
|
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return $this->trigger(
|
||||
"wrong number of arguments ($arg_count given, "
|
||||
. count($this->f[$fnn]['args']) . " expected)"
|
||||
);
|
||||
}
|
||||
} else { // did we somehow push a non-function on the stack? this should never happen
|
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return $this->trigger("internal error");
|
||||
}
|
||||
}
|
||||
$index++;
|
||||
//===============
|
||||
} elseif ($op == ',' and $expecting_op) { // did we just finish a function argument?
|
||||
while (($o2 = $stack->pop()) != '(') {
|
||||
if (is_null($o2)) {
|
||||
return $this->trigger("unexpected ','"); // oops, never had a (
|
||||
} else {
|
||||
$output[] = $o2; // pop the argument expression stuff and push onto the output
|
||||
}
|
||||
}
|
||||
// make sure there was a function
|
||||
if (!preg_match("/^([a-z]\w*)\($/", $stack->last(2), $matches)) {
|
||||
return $this->trigger("unexpected ','");
|
||||
}
|
||||
$stack->push($stack->pop()+1); // increment the argument count
|
||||
$stack->push('('); // put the ( back on, we'll need to pop back to it again
|
||||
$index++;
|
||||
$expecting_op = false;
|
||||
//===============
|
||||
} elseif ($op == '(' and !$expecting_op) {
|
||||
$stack->push('('); // that was easy
|
||||
$index++;
|
||||
//===============
|
||||
} elseif ($ex and !$expecting_op) { // do we now have a function/variable/number?
|
||||
$expecting_op = true;
|
||||
$val = $match[1];
|
||||
if (preg_match("/^([a-z]\w*)\($/", $val, $matches)) { // may be func, or variable w/
|
||||
// implicit multiplication against parentheses...
|
||||
if (in_array($matches[1], $this->fb) or array_key_exists($matches[1], $this->f)) { // it's a func
|
||||
$stack->push($val);
|
||||
$stack->push(1);
|
||||
$stack->push('(');
|
||||
$expecting_op = false;
|
||||
} else { // it's a var w/ implicit multiplication
|
||||
$val = $matches[1];
|
||||
$output[] = $val;
|
||||
}
|
||||
} else { // it's a plain old var or num
|
||||
$output[] = $val;
|
||||
}
|
||||
$index += strlen($val);
|
||||
//===============
|
||||
} elseif ($op == ')') { // miscellaneous error checking
|
||||
return $this->trigger("unexpected ')'");
|
||||
} elseif (in_array($op, $ops) and !$expecting_op) {
|
||||
return $this->trigger("unexpected operator '$op'");
|
||||
} else { // I don't even want to know what you did to get here
|
||||
return $this->trigger("an unexpected error occured");
|
||||
}
|
||||
if ($index == strlen($expr)) {
|
||||
if (in_array($op, $ops)) { // did we end with an operator? bad.
|
||||
return $this->trigger("operator '$op' lacks operand");
|
||||
} else {
|
||||
break;
|
||||
}
|
||||
}
|
||||
while (substr($expr, $index, 1) == ' ') { // step the index past whitespace (pretty much turns whitespace
|
||||
$index++; // into implicit multiplication if no operator is there)
|
||||
}
|
||||
}
|
||||
while (!is_null($op = $stack->pop())) { // pop everything off the stack and push onto output
|
||||
if ($op == '(') {
|
||||
return $this->trigger("expecting ')'"); // if there are (s on the stack, ()s were unbalanced
|
||||
}
|
||||
$output[] = $op;
|
||||
}
|
||||
return $output;
|
||||
}
|
||||
// evaluate postfix notation
|
||||
private function pfx($tokens, $vars = array())
|
||||
{
|
||||
|
||||
if ($tokens == false) {
|
||||
return false;
|
||||
}
|
||||
|
||||
$stack = new EvalMathStack;
|
||||
|
||||
foreach ($tokens as $token) { // nice and easy
|
||||
// if the token is a binary operator, pop two values off the stack, do the operation,
|
||||
//and push the result back on
|
||||
if (in_array($token, array('+', '-', '*', '/', '^'))) {
|
||||
if (is_null($op2 = $stack->pop())) {
|
||||
return $this->trigger("internal error");
|
||||
}
|
||||
if (is_null($op1 = $stack->pop())) {
|
||||
return $this->trigger("internal error");
|
||||
}
|
||||
switch ($token) {
|
||||
case '+':
|
||||
$stack->push($op1+$op2);
|
||||
break;
|
||||
case '-':
|
||||
$stack->push($op1-$op2);
|
||||
break;
|
||||
case '*':
|
||||
$stack->push($op1*$op2);
|
||||
break;
|
||||
case '/':
|
||||
if ($op2 == 0) {
|
||||
return $this->trigger("division by zero");
|
||||
}
|
||||
$stack->push($op1/$op2);
|
||||
break;
|
||||
case '^':
|
||||
$stack->push(pow($op1, $op2));
|
||||
break;
|
||||
}
|
||||
// if the token is a unary operator, pop one value off the stack, do the operation, and push it back on
|
||||
} elseif ($token == "_") {
|
||||
$stack->push(-1*$stack->pop());
|
||||
// if the token is a function, pop arguments off the stack, hand them to the function,
|
||||
//and push the result back on
|
||||
} elseif (preg_match("/^([a-z]\w*)\($/", $token, $matches)) { // it's a function!
|
||||
$fnn = $matches[1];
|
||||
if (in_array($fnn, $this->fb)) { // built-in function:
|
||||
if (is_null($op1 = $stack->pop())) {
|
||||
return $this->trigger("internal error");
|
||||
}
|
||||
$fnn = preg_replace("/^arc/", "a", $fnn); // for the 'arc' trig synonyms
|
||||
if ($fnn == 'ln') {
|
||||
$fnn = 'log';
|
||||
}
|
||||
$stack->push($fnn($op1)); // perfectly safe variable function call
|
||||
} elseif (array_key_exists($fnn, $this->f)) { // user function
|
||||
// get args
|
||||
$args = array();
|
||||
for ($i = count($this->f[$fnn]['args'])-1; $i >= 0; $i--) {
|
||||
if (is_null($args[$this->f[$fnn]['args'][$i]] = $stack->pop())) {
|
||||
return $this->trigger("internal error");
|
||||
}
|
||||
}
|
||||
$stack->push($this->pfx($this->f[$fnn]['func'], $args)); // yay... recursion!!!!
|
||||
}
|
||||
// if the token is a number or variable, push it on the stack
|
||||
} else {
|
||||
if (is_numeric($token)) {
|
||||
$stack->push($token);
|
||||
} elseif (array_key_exists($token, $this->v)) {
|
||||
$stack->push($this->v[$token]);
|
||||
} elseif (array_key_exists($token, $vars)) {
|
||||
$stack->push($vars[$token]);
|
||||
} else {
|
||||
return $this->trigger("undefined variable '$token'");
|
||||
}
|
||||
}
|
||||
}
|
||||
// when we're out of tokens, the stack should have a single element, the final result
|
||||
if ($stack->count != 1) {
|
||||
return $this->trigger("internal error");
|
||||
}
|
||||
return $stack->pop();
|
||||
}
|
||||
|
||||
// trigger an error, but nicely, if need be
|
||||
private function trigger($msg)
|
||||
{
|
||||
$this->last_error = $msg;
|
||||
if (!$this->suppress_errors) {
|
||||
trigger_error($msg, E_USER_WARNING);
|
||||
}
|
||||
return false;
|
||||
}
|
||||
}
|
||||
114
core/src/Utils/Math/EvalMathFuncs.php
Normal file
114
core/src/Utils/Math/EvalMathFuncs.php
Normal file
@@ -0,0 +1,114 @@
|
||||
<?php
|
||||
/**
|
||||
* Created by PhpStorm.
|
||||
* User: Thilina
|
||||
* Date: 8/20/17
|
||||
* Time: 9:55 AM
|
||||
*/
|
||||
|
||||
namespace Utils\Math;
|
||||
|
||||
// spreadsheet functions emulation
|
||||
class EvalMathFuncs
|
||||
{
|
||||
|
||||
protected static $randomseed = null;
|
||||
|
||||
public static function average()
|
||||
{
|
||||
$args = func_get_args();
|
||||
return (call_user_func_array(array('self', 'sum'), $args) / count($args));
|
||||
}
|
||||
|
||||
public static function max()
|
||||
{
|
||||
$args = func_get_args();
|
||||
$res = array_pop($args);
|
||||
foreach ($args as $a) {
|
||||
if ($res < $a) {
|
||||
$res = $a;
|
||||
}
|
||||
}
|
||||
return $res;
|
||||
}
|
||||
|
||||
public static function min()
|
||||
{
|
||||
$args = func_get_args();
|
||||
$res = array_pop($args);
|
||||
foreach ($args as $a) {
|
||||
if ($res > $a) {
|
||||
$res = $a;
|
||||
}
|
||||
}
|
||||
return $res;
|
||||
}
|
||||
|
||||
public static function mod($op1, $op2)
|
||||
{
|
||||
return $op1 % $op2;
|
||||
}
|
||||
|
||||
public static function pi()
|
||||
{
|
||||
return pi();
|
||||
}
|
||||
|
||||
public static function power($op1, $op2)
|
||||
{
|
||||
return pow($op1, $op2);
|
||||
}
|
||||
|
||||
public static function round($val, $precision = 0)
|
||||
{
|
||||
return round($val, $precision);
|
||||
}
|
||||
|
||||
public static function sum()
|
||||
{
|
||||
$args = func_get_args();
|
||||
$res = 0;
|
||||
foreach ($args as $a) {
|
||||
$res += $a;
|
||||
}
|
||||
return $res;
|
||||
}
|
||||
|
||||
protected static function setRandomSeed($randomseed)
|
||||
{
|
||||
self::$randomseed = $randomseed;
|
||||
}
|
||||
|
||||
protected static function getRandomSeed()
|
||||
{
|
||||
if (is_null(self::$randomseed)) {
|
||||
return microtime();
|
||||
} else {
|
||||
return self::$randomseed;
|
||||
}
|
||||
}
|
||||
|
||||
protected static function randInt($min, $max)
|
||||
{
|
||||
if ($min >= $max) {
|
||||
return false; //error
|
||||
}
|
||||
$noofchars = ceil(log($max + 1 - $min, '16'));
|
||||
$md5string = md5(self::getRandomSeed());
|
||||
$stringoffset = 0;
|
||||
do {
|
||||
while (($stringoffset + $noofchars) > strlen($md5string)) {
|
||||
$md5string .= md5($md5string);
|
||||
}
|
||||
$randomno = hexdec(substr($md5string, $stringoffset, $noofchars));
|
||||
$stringoffset += $noofchars;
|
||||
} while (($min + $randomno) > $max);
|
||||
return $min + $randomno;
|
||||
}
|
||||
|
||||
protected static function randFloat()
|
||||
{
|
||||
$randomvalues = unpack('v', md5(self::getRandomSeed(), true));
|
||||
return array_shift($randomvalues) / 65536;
|
||||
}
|
||||
}
|
||||
40
core/src/Utils/Math/EvalMathStack.php
Normal file
40
core/src/Utils/Math/EvalMathStack.php
Normal file
@@ -0,0 +1,40 @@
|
||||
<?php
|
||||
/**
|
||||
* Created by PhpStorm.
|
||||
* User: Thilina
|
||||
* Date: 8/20/17
|
||||
* Time: 9:55 AM
|
||||
*/
|
||||
|
||||
namespace Utils\Math;
|
||||
|
||||
// for internal use
|
||||
class EvalMathStack
|
||||
{
|
||||
|
||||
protected $stack = array();
|
||||
public $count = 0;
|
||||
|
||||
public function push($val)
|
||||
{
|
||||
$this->stack[$this->count] = $val;
|
||||
$this->count++;
|
||||
}
|
||||
|
||||
public function pop()
|
||||
{
|
||||
if ($this->count > 0) {
|
||||
$this->count--;
|
||||
return $this->stack[$this->count];
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
public function last($n = 1)
|
||||
{
|
||||
if ($this->count - $n >= 0) {
|
||||
return $this->stack[$this->count - $n];
|
||||
}
|
||||
return null;
|
||||
}
|
||||
}
|
||||
40
core/src/Utils/SessionUtils.php
Normal file
40
core/src/Utils/SessionUtils.php
Normal file
@@ -0,0 +1,40 @@
|
||||
<?php
|
||||
namespace Utils;
|
||||
|
||||
class SessionUtils
|
||||
{
|
||||
public static function getSessionObject($name)
|
||||
{
|
||||
session_start();
|
||||
if (isset($_SESSION[$name.CLIENT_NAME])) {
|
||||
$obj = $_SESSION[$name.CLIENT_NAME];
|
||||
}
|
||||
session_write_close();
|
||||
if (empty($obj)) {
|
||||
return null;
|
||||
}
|
||||
return json_decode($obj);
|
||||
}
|
||||
|
||||
public static function saveSessionObject($name, $obj)
|
||||
{
|
||||
session_start();
|
||||
$_SESSION[$name.CLIENT_NAME] = json_encode($obj);
|
||||
session_write_close();
|
||||
}
|
||||
|
||||
public static function unsetClientSession()
|
||||
{
|
||||
$names = [
|
||||
"user",
|
||||
"modulePath",
|
||||
"loginRedirect",
|
||||
"admin_current_profile"
|
||||
];
|
||||
session_start();
|
||||
foreach ($names as $name) {
|
||||
unset($_SESSION[$name.CLIENT_NAME]);
|
||||
}
|
||||
session_write_close();
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user