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Edit File: generate_operator_regex.php

<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ $operators = array('not', '!', 'or', '||', '&&', 'and', '|', '^', '&', '==', '===', '!=', '!==', '<', '>', '>=', '<=', 'not in', 'in', '..', '+', '-', '~', '*', '/', '%', 'matches', '**'); $operators = array_combine($operators, array_map('strlen', $operators)); arsort($operators); $regex = array(); foreach ($operators as $operator => $length) { // an operator that ends with a character must be followed by // a whitespace or a parenthesis $regex[] = preg_quote($operator, '/').(ctype_alpha($operator[$length - 1]) ? '(?=[\s(])' : ''); } echo '/'.implode('|', $regex).'/A';