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<?php |
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declare(strict_types=1); |
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namespace FRZB\Component\RequestMapper\Helper; |
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use JetBrains\PhpStorm\Immutable; |
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/** @internal */ |
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#[Immutable] |
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final class ArrayHelper |
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{ |
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private function __construct() |
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{ |
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} |
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/** Flatten a multi-dimensional associative array with dots. */ |
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public static function flatten(iterable $array, string $prepend = ''): array |
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{ |
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$results = []; |
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foreach ($array as $key => $value) { |
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if (\is_array($value) && !empty($value)) { |
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$results = array_merge($results, self::flatten($value, $prepend.$key.'.')); |
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} else { |
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$results[$prepend.$key] = $value; |
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} |
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} |
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return $results; |
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} |
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/** Convert a flatten "dot" notation array into an expanded array. */ |
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public static function unFlatten(iterable $array): array |
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{ |
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$results = []; |
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foreach ($array as $key => $value) { |
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self::set($results, $key, $value); |
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} |
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return $results; |
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} |
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/** |
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* Set an array item to a given value using "dot" notation. |
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* If no key is given to the method, the entire array will be replaced. |
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*/ |
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public static function set(iterable &$array, null|string|int $key, mixed $value): array |
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{ |
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if (null === $key) { |
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return $array = $value; |
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} |
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$keys = explode('.', $key); |
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foreach ($keys as $i => $key) { |
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if (1 === \count($keys)) { |
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break; |
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} |
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unset($keys[$i]); |
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// If the key doesn't exist at this depth, we will just create an empty array |
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// to hold the next value, allowing us to create the arrays to hold final |
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// values at the correct depth. Then we'll keep digging into the array. |
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if (!isset($array[$key]) || !\is_array($array[$key])) { |
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$array[$key] = []; |
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} |
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$array = &$array[$key]; |
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} |
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$array[array_shift($keys)] = $value; |
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return $array; |
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} |
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} |
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fractalzombie /
frzb-request-mapper
