Chris@0: <?php
Chris@0: /**
Chris@0:  * Random_* Compatibility Library
Chris@0:  * for using the new PHP 7 random_* API in PHP 5 projects
Chris@0:  *
Chris@0:  * The MIT License (MIT)
Chris@0:  *
Chris@16:  * Copyright (c) 2015 - 2018 Paragon Initiative Enterprises
Chris@0:  *
Chris@0:  * Permission is hereby granted, free of charge, to any person obtaining a copy
Chris@0:  * of this software and associated documentation files (the "Software"), to deal
Chris@0:  * in the Software without restriction, including without limitation the rights
Chris@0:  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
Chris@0:  * copies of the Software, and to permit persons to whom the Software is
Chris@0:  * furnished to do so, subject to the following conditions:
Chris@0:  *
Chris@0:  * The above copyright notice and this permission notice shall be included in
Chris@0:  * all copies or substantial portions of the Software.
Chris@0:  *
Chris@0:  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
Chris@0:  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
Chris@0:  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
Chris@0:  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
Chris@0:  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Chris@0:  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
Chris@0:  * SOFTWARE.
Chris@0:  */
Chris@0: 
Chris@0: if (!is_callable('RandomCompat_intval')) {
Chris@17: 
Chris@0:     /**
Chris@0:      * Cast to an integer if we can, safely.
Chris@17:      *
Chris@0:      * If you pass it a float in the range (~PHP_INT_MAX, PHP_INT_MAX)
Chris@0:      * (non-inclusive), it will sanely cast it to an int. If you it's equal to
Chris@0:      * ~PHP_INT_MAX or PHP_INT_MAX, we let it fail as not an integer. Floats 
Chris@0:      * lose precision, so the <= and => operators might accidentally let a float
Chris@0:      * through.
Chris@17:      *
Chris@0:      * @param int|float $number    The number we want to convert to an int
Chris@12:      * @param bool      $fail_open Set to true to not throw an exception
Chris@17:      *
Chris@0:      * @return float|int
Chris@12:      * @psalm-suppress InvalidReturnType
Chris@0:      *
Chris@0:      * @throws TypeError
Chris@0:      */
Chris@0:     function RandomCompat_intval($number, $fail_open = false)
Chris@0:     {
Chris@0:         if (is_int($number) || is_float($number)) {
Chris@0:             $number += 0;
Chris@0:         } elseif (is_numeric($number)) {
Chris@16:             /** @psalm-suppress InvalidOperand */
Chris@0:             $number += 0;
Chris@0:         }
Chris@16:         /** @var int|float $number */
Chris@0: 
Chris@0:         if (
Chris@0:             is_float($number)
Chris@16:                 &&
Chris@0:             $number > ~PHP_INT_MAX
Chris@16:                 &&
Chris@0:             $number < PHP_INT_MAX
Chris@0:         ) {
Chris@0:             $number = (int) $number;
Chris@0:         }
Chris@0: 
Chris@0:         if (is_int($number)) {
Chris@0:             return (int) $number;
Chris@0:         } elseif (!$fail_open) {
Chris@0:             throw new TypeError(
Chris@0:                 'Expected an integer.'
Chris@0:             );
Chris@0:         }
Chris@0:         return $number;
Chris@0:     }
Chris@0: }