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<?php |
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/** |
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* PHP: Nelson Martell Library file |
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* |
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* Copyright © 2019 Nelson Martell (http://nelson6e65.github.io) |
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* |
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* Licensed under The MIT License (MIT) |
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* For full copyright and license information, please see the LICENSE |
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* Redistributions of files must retain the above copyright notice. |
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* |
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* @copyright 2019 Nelson Martell |
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* @link http://nelson6e65.github.io/php_nml/ |
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* @since 1.0.0 |
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* @license http://www.opensource.org/licenses/mit-license.php The MIT License (MIT) |
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* */ |
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namespace NelsonMartell\Extensions; |
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use InvalidArgumentException; |
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use NelsonMartell\IComparer; |
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use NelsonMartell\StrictObject; |
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use function NelsonMartell\msg; |
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use function NelsonMartell\typeof; |
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/** |
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* Provides extension methods to handle arrays. |
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* |
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* @since 1.0.0 |
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* @author Nelson Martell <[email protected]> |
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* */ |
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class Arrays implements IComparer |
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{ |
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/** |
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* Ensures that object given is an `array`. Else, throw an exception. |
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* |
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* @param mixed $obj Object to validate. |
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* |
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* @return array Same object given. |
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* |
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* @throws InvalidArgumentException if object is not an `array`. |
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*/ |
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public static function ensureIsArray($obj) |
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{ |
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if (!is_array($obj)) { |
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$msg = msg('Provided object must to be an array; "{0}" given.', typeof($obj)); |
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throw new InvalidArgumentException($msg); |
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} |
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return $obj; |
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} |
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/** |
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* {@inheritDoc} |
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* |
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* @param array $left |
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* @param array $right |
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* |
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* @return int|null Returns null if one of them is not an `array`. |
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* |
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* @since 1.0.0 Move implementation of array comparation from `StrictObject::compare()`. |
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*/ |
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public static function compare($left, $right) |
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{ |
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if (!is_array($left) || !is_array($right)) { |
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return null; |
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} |
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$r = count($left) - count($right); |
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if ($r === 0) { |
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reset($left); |
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reset($right); |
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do { |
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$lKey = key($left); |
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$lValue = current($left); |
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$rKey = key($right); |
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$rValue = current($right); |
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$r = StrictObject::compare((string) $lKey, (string) $rKey); |
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if ($r === 0) { |
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// Recursive call to compare values |
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$r = StrictObject::compare($lValue, $rValue); |
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} |
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next($left); |
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next($right); |
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} while (key($left) !== null && key($right) !== null && $r === 0); |
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} |
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return $r; |
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} |
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} |
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nelson6e65 /
php_nml
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