52 lines
1.6 KiB
PHP
52 lines
1.6 KiB
PHP
<?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) 2008-2010 (original work) Deutsche Institut für Internationale Pädagogische Forschung (under the project TAO-TRANSFER);
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* 2009-2012 (update and modification) Public Research Centre Henri Tudor (under the project TAO-SUSTAIN & TAO-DEV);
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*
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*/
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/**
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* Helper to process numeric input
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*
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* @access public
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* @author Jehan Bihin
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* @package tao
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* @since 2.2
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*/
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class tao_helpers_Numeric
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{
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/**
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* Converts a string to a float, in order to support negative values.
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*
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* @access public
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* @author Jehan Bihin, <jehan.bihin@tudor.lu>
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* @param string value
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* @return float
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*/
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public static function parseFloat($value)
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{
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$returnValue = (float) 0.0;
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$returnValue = str_replace(',', '.', $value);
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$returnValue = preg_replace('/[^\-\d.]/', '', $returnValue);
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return (float) $returnValue;
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}
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}
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