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