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<?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 - 2016 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 boolean $fail_open Set to true to not throw an exception |
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* |
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* @return float|int |
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* |
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* @throws TypeError |
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*/ |
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function RandomCompat_intval($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 = (int) $number; |
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} |
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if ( |
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is_float($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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paragonie /
random_compat
