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<?php |
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/** |
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* This file is part of the Zemit Framework. |
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* |
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* (c) Zemit Team <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE.txt |
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* file that was distributed with this source code. |
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*/ |
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namespace Zemit\Support\Helper\Arr; |
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/** |
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* This class provides methods to parse an array into a flatten array with key path separated by a delimiter. |
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*/ |
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class FlattenKeys |
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{ |
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public function __invoke(array $collection = [], string $delimiter = '.', bool $lowerKey = true): array |
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{ |
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return self::process($collection, $delimiter, $lowerKey) ?? []; |
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} |
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/** |
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* Here to parse the columns parameter into some kind of flatten array with |
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* the key path separated by dot "my.path" and the value true, false or a callback function |
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* including the ExposeBuilder object |
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*/ |
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public static function process(array $collection = [], string $delimiter = '.', bool $lowerKey = true, string $context = null): ?array |
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{ |
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$ret = []; |
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foreach ($collection as $key => $value) { |
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// flip value to key |
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if (is_int($key)) { |
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if (is_string($value)) { |
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$key = $value; |
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$value = true; |
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} |
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else { |
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$key = null; |
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} |
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} |
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// force lower case key |
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if (is_string($key)) { |
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$key = trim($lowerKey ? mb_strtolower($key) : $key); |
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} |
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// true for empty string |
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if (is_string($value) && empty($value)) { |
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$value = true; |
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} |
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// set the key |
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$currentKey = (!empty($context) ? $context . (!empty($key) ? $delimiter : null) : null) . $key; |
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if (is_callable($value)) { |
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$value = $value(); |
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} |
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if (is_array($value)) { |
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$subRet = self::process($value, $delimiter, $lowerKey, $currentKey); |
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if (is_array($subRet)) { |
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$ret = array_merge_recursive($ret, $subRet); |
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} |
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if (!isset($ret[$currentKey])) { |
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$ret[$currentKey] = false; |
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} |
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} |
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else { |
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$ret[$currentKey] = $value; |
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} |
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} |
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return $ret; |
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} |
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} |
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zemit-cms /
core
