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<?php
namespace Bitrix\Iblock\Helpers\Arrays;
class ArrayFlatterator
{
private array $processedKeys = [];
public function __construct(array $processedKeys = [])
{
$this->processedKeys = $processedKeys;
}
public function flatten(array $input): array
{
if (!empty($this->processedKeys))
{
return $this->flattenWithCheckKeys($input);
}
foreach ($input as $key => $value)
{
if (is_array($value))
{
$newItems = $this->getFlattenFields($value, $key);
foreach ($newItems as $newKey => $newValue)
{
$input[$newKey] = $newValue;
}
}
}
return $input;
}
private function flattenWithCheckKeys(array $input): array
{
foreach ($input as $key => $value)
{
if (is_array($value) && in_array($key, $this->processedKeys, true))
{
$newItems = $this->getFlattenFields($value, $key);
foreach ($newItems as $newKey => $newValue)
{
$input[$newKey] = $newValue;
}
}
}
return $input;
}
private function getFlattenFields(array $fields, string $prefix): array
{
$result = [];
foreach ($fields as $name => $value)
{
$key = "{$prefix}[{$name}]";
if (is_array($value))
{
array_push($result, ...$this->getFlattenFields($value, $key));
}
else
{
$result[$key] = $value;
}
}
return $result;
}
}