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<?php declare(strict_types=1); |
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namespace AlecRabbit; |
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use const AlecRabbit\Helpers\Constants\EMPTY_ELEMENTS; |
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/** |
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* @param array $arr |
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* @param int $columns |
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* @param callable|null $preprocessor |
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* @param int $pad |
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* @return array |
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*/ |
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function formatted_array( |
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array $arr, |
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int $columns = 10, |
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?callable $preprocessor = null, |
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int $pad = STR_PAD_RIGHT |
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): array { |
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$result = $tmp = []; |
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if ($preprocessor) { |
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\array_walk($arr, $preprocessor); |
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} |
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$maxLength = arr_el_max_length($arr); |
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$rowEmpty = true; |
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foreach ($arr as $element) { |
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$tmp[] = \str_pad((string)$element, $maxLength, ' ', $pad); |
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$rowEmpty = $rowEmpty && \in_array($element, EMPTY_ELEMENTS, true); |
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if (\count($tmp) >= $columns) { |
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update_result($result, $rowEmpty, $tmp); |
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} |
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} |
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if (!empty($tmp)) { |
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update_result($result, $rowEmpty, $tmp); |
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} |
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return $result; |
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} |
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/** |
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* @param array $data |
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* @internal |
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* @return int |
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*/ |
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function arr_el_max_length(array &$data): int |
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{ |
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$maxLength = 0; |
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foreach ($data as &$element) { |
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if (\is_array($element)) { |
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throw new \RuntimeException('Array to string conversion'); |
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} |
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$len = \strlen($element = (string)$element); |
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if ($maxLength < $len) { |
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$maxLength = $len; |
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} |
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} |
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return $maxLength; |
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} |
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/** |
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* @param array $result |
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* @param bool $rowEmpty |
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* @param array $tmp |
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* @internal |
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*/ |
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function update_result(array &$result, bool &$rowEmpty, array &$tmp): void |
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{ |
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$result[] = \implode($rowEmpty ? '' : ' ', $tmp); |
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$rowEmpty = true; |
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$tmp = []; |
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} |
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/** |
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* @param array $data |
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* @return array |
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*/ |
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function array_unset_first(array $data): array |
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{ |
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$key = \array_key_first($data); |
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if (null !== $key) { |
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unset($data[$key]); |
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} |
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return $data; |
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} |
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/** |
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* @param array $data |
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* @return array |
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*/ |
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function array_unset_last(array $data): array |
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{ |
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$key = \array_key_last($data); |
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if (null !== $key) { |
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unset($data[$key]); |
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} |
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return $data; |
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} |
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/** |
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* Known issue `array_is_homogeneous` can't handle cyclic references in arrays |
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* $a = []; |
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* $a[1] = &$a; |
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* $b = []; |
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* $b[1] = &$b; |
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* var_dump($b === $a); // 'PHP Fatal error: Nesting level too deep - recursive dependency?' |
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* |
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* @param array $a |
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* @return bool |
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*/ |
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function array_is_homogeneous(array $a): bool |
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{ |
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$firstElement = current($a); |
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foreach ($a as $element) { |
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if ($firstElement !== $element) { |
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return false; |
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} |
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} |
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return true; |
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} |
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alecrabbit /
php-helpers
