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1 | <?php |
2 | |
3 | /** |
4 | * This program is free software; you can redistribute it and/or |
5 | * modify it under the terms of the GNU General Public License |
6 | * as published by the Free Software Foundation; under version 2 |
7 | * of the License (non-upgradable). |
8 | * |
9 | * This program is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
12 | * GNU General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write to the Free Software |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
17 | * |
18 | * Copyright (c) 2008-2010 (original work) Deutsche Institut für Internationale Pädagogische Forschung |
19 | * (under the project TAO-TRANSFER); |
20 | * 2009-2012 (update and modification) Public Research Centre Henri Tudor |
21 | * (under the project TAO-SUSTAIN & TAO-DEV); |
22 | * |
23 | */ |
24 | |
25 | /** |
26 | * Helper to process numeric input |
27 | * |
28 | * @access public |
29 | * @author Jehan Bihin |
30 | * @package tao |
31 | * @since 2.2 |
32 | |
33 | */ |
34 | class tao_helpers_Numeric |
35 | { |
36 | /** |
37 | * Converts a string to a float, in order to support negative values. |
38 | * |
39 | * @access public |
40 | * @author Jehan Bihin, <jehan.bihin@tudor.lu> |
41 | * @param string value |
42 | * @return float |
43 | */ |
44 | public static function parseFloat($value) |
45 | { |
46 | $returnValue = (float) 0.0; |
47 | |
48 | $returnValue = str_replace(',', '.', $value); |
49 | $returnValue = preg_replace('/[^\-\d.]/', '', $returnValue); |
50 | |
51 | return (float) $returnValue; |
52 | } |
53 | } |