55 lines
1.3 KiB
PHP
55 lines
1.3 KiB
PHP
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<?php declare(strict_types=1);
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/**
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* Banker
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*
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* A Caching library implementing psr/cache (PSR 6) and psr/simple-cache (PSR 16)
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*
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* PHP version 7.4
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*
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* @package Banker
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* @author Timothy J. Warren <tim@timshomepage.net>
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* @copyright 2016 - 2020 Timothy J. Warren
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* @license http://www.opensource.org/licenses/mit-license.html MIT License
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* @version 3.1.0
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* @link https://git.timshomepage.net/timw4mail/banker
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*/
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namespace Aviat\Banker;
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use Aviat\Banker\Exception\InvalidArgumentException;
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trait KeyValidateTrait {
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/**
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* @param $keys
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* @param bool $hash
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* @throws InvalidArgumentException
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*/
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protected function validateKeys($keys, bool $hash = FALSE): void
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{
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// Check type of keys
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if ( ! is_iterable($keys))
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{
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throw new InvalidArgumentException('Keys must be an array or a traversable object');
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}
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$keys = ($hash) ? array_keys((array)$keys) : (array)$keys;
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// Check each key
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array_walk($keys, fn($key) => $this->validateKey($key));
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}
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/**
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* @param string $key
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* @throws InvalidArgumentException
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*/
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protected function validateKey($key): void
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{
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if ( ! is_string($key))
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{
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throw new InvalidArgumentException('Cache key must be a string.');
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}
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else if (preg_match("`[{}()/@:\\\]`", $key) === 1)
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{
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throw new InvalidArgumentException('Invalid characters in cache key');
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}
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}
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}
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