107 lines
2.8 KiB
PHP
107 lines
2.8 KiB
PHP
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<?php
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/**
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; under version 2
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* of the License (non-upgradable).
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright (c) 2018 (original work) Open Assessment Technologies SA (under the project TAO-PRODUCT);
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*
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*/
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namespace oat\generis\Helper;
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class SystemHelper
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{
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/**
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* Returns the maximum size for fileuploads in bytes.
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*
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* @return int The upload file limit.
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*/
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public static function getFileUploadLimit()
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{
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$limits = [
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self::toBytes(ini_get('upload_max_filesize')),
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self::toBytes(ini_get('post_max_size'))
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];
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if (ini_get('memory_limit') !== '-1') {
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$limits[] = self::toBytes(ini_get('memory_limit'));
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}
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return min($limits);
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}
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/**
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* Returns whenever or not Tao is installed on windows
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* @return boolean
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*/
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public static function isWindows()
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{
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return strtoupper(substr(PHP_OS, 0, 3)) == 'WIN';
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}
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/**
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* Returns the Operating System running TAO as a String.
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*
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* The returned value can be AFAIK:
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*
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* * 'WINNT' (Win XP, Windows NT, ...)
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* * 'Linux'
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* * 'FreeBSD'
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* * 'Darwin' (Mac OS X)
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* * 'CYGWIN_NT-5.1'
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* * 'HP-UX'
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* * 'IRIX64'
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* * 'NetBSD'
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* * 'OpenBSD'
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* * 'SunOS'
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* * 'Unix'
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* * 'WIN32'
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* * 'Windows'
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*
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* @return string The operating system that runs the script.
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*/
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public static function getOperatingSystem()
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{
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$returnValue = PHP_OS;
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return (string) $returnValue;
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}
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/**
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* Get the size in bytes of a PHP variable given as a string.
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*
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* @param string $phpSyntax The PHP syntax to describe the variable.
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* @return int The size in bytes.
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*/
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private static function toBytes($phpSyntax)
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{
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$val = trim($phpSyntax);
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$last = strtolower($val[strlen($val) - 1]);
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if (!is_numeric($last)) {
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$val = substr($val, 0, -1);
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switch ($last) {
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case 'g':
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$val *= 1024;
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case 'm':
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$val *= 1024;
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case 'k':
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$val *= 1024;
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}
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}
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return (int)$val;
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}
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}
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