PageRenderTime 23ms CodeModel.GetById 19ms app.highlight 1ms RepoModel.GetById 1ms app.codeStats 1ms

/vendor/paragonie/random_compat/lib/cast_to_int.php

https://bitbucket.org/alan_cordova/api-sb-map
PHP | 75 lines | 28 code | 4 blank | 43 comment | 5 complexity | fd21b23e869e1c90a7113d499991824f MD5 | raw file
 1<?php
 2/**
 3 * Random_* Compatibility Library
 4 * for using the new PHP 7 random_* API in PHP 5 projects
 5 *
 6 * The MIT License (MIT)
 7 *
 8 * Copyright (c) 2015 - 2017 Paragon Initiative Enterprises
 9 *
10 * Permission is hereby granted, free of charge, to any person obtaining a copy
11 * of this software and associated documentation files (the "Software"), to deal
12 * in the Software without restriction, including without limitation the rights
13 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
14 * copies of the Software, and to permit persons to whom the Software is
15 * furnished to do so, subject to the following conditions:
16 *
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
19 *
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
23 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
25 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
26 * SOFTWARE.
27 */
28
29if (!is_callable('RandomCompat_intval')) {
30    
31    /**
32     * Cast to an integer if we can, safely.
33     * 
34     * If you pass it a float in the range (~PHP_INT_MAX, PHP_INT_MAX)
35     * (non-inclusive), it will sanely cast it to an int. If you it's equal to
36     * ~PHP_INT_MAX or PHP_INT_MAX, we let it fail as not an integer. Floats 
37     * lose precision, so the <= and => operators might accidentally let a float
38     * through.
39     * 
40     * @param int|float $number    The number we want to convert to an int
41     * @param bool      $fail_open Set to true to not throw an exception
42     * 
43     * @return float|int
44     * @psalm-suppress InvalidReturnType
45     *
46     * @throws TypeError
47     */
48    function RandomCompat_intval($number, $fail_open = false)
49    {
50        if (is_int($number) || is_float($number)) {
51            $number += 0;
52        } elseif (is_numeric($number)) {
53            $number += 0;
54        }
55
56        if (
57            is_float($number)
58            &&
59            $number > ~PHP_INT_MAX
60            &&
61            $number < PHP_INT_MAX
62        ) {
63            $number = (int) $number;
64        }
65
66        if (is_int($number)) {
67            return (int) $number;
68        } elseif (!$fail_open) {
69            throw new TypeError(
70                'Expected an integer.'
71            );
72        }
73        return $number;
74    }
75}