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75 lines
2.6 KiB
75 lines
2.6 KiB
<?php
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/**
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* Random_* Compatibility Library
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* for using the new PHP 7 random_* API in PHP 5 projects
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2015 - 2017 Paragon Initiative Enterprises
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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if (!is_callable('RandomCompat_intval')) {
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/**
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* Cast to an integer if we can, safely.
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*
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* If you pass it a float in the range (~PHP_INT_MAX, PHP_INT_MAX)
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* (non-inclusive), it will sanely cast it to an int. If you it's equal to
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* ~PHP_INT_MAX or PHP_INT_MAX, we let it fail as not an integer. Floats
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* lose precision, so the <= and => operators might accidentally let a float
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* through.
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*
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* @param int|float $number The number we want to convert to an int
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* @param bool $fail_open Set to true to not throw an exception
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*
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* @return float|int
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* @psalm-suppress InvalidReturnType
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*
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* @throws TypeError
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*/
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function RandomCompat_intval($number, $fail_open = false)
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{
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if (is_int($number) || is_float($number)) {
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$number += 0;
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} elseif (is_numeric($number)) {
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$number += 0;
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}
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if (
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is_float($number)
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&&
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$number > ~PHP_INT_MAX
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&&
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$number < PHP_INT_MAX
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) {
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$number = (int) $number;
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}
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if (is_int($number)) {
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return (int) $number;
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} elseif (!$fail_open) {
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throw new TypeError(
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'Expected an integer.'
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);
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}
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return $number;
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}
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}
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