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<?php declare(strict_types=1); |
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namespace Compolomus\Pagination; |
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class Pagination |
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{ |
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private $total; |
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private $page; |
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private $limit; |
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private $totalPages; |
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private $length; |
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/** |
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* Pagination constructor. |
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* |
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* @param int $page |
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* @param int $limit |
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* @param int $total |
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* @param int $length |
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*/ |
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public function __construct(int $page, int $limit, int $total, int $length = 3) |
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{ |
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$this->totalPages = (int)ceil($total / $limit); |
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$this->page = $page < 1 ? 1 : ($page > $this->totalPages ? $this->totalPages : $page); |
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$this->limit = $limit > 0 ? $limit : 10; |
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$this->total = $total; |
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$this->length = $length >= 0 ? $length : 3; |
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} |
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/** |
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* @return int |
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*/ |
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public function getLimit(): int |
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{ |
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return $this->limit; |
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} |
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/** |
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* @return int |
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*/ |
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public function getEnd(): int |
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{ |
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return $this->page === $this->totalPages ? $this->total : $this->page * $this->limit; |
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} |
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/** |
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* @return int |
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*/ |
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public function getOffset(): int |
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{ |
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return $this->page === 1 ? 0 : ($this->page - 1) * $this->limit; |
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} |
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/** |
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* @return array |
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*/ |
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private function start(): array |
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{ |
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$result = []; |
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if ($this->page > 1) { |
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$result['minus'] = $this->page - 1; |
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} |
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if ($this->page !== 1) { |
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$result['first'] = 1; |
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} |
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return $result; |
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} |
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/** |
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* @return int |
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*/ |
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private function leftDots(): int |
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{ |
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return $this->page - $this->length; |
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} |
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/** |
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* @return array |
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*/ |
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private function leftPad(): array |
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{ |
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$result = []; |
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$leftDots = $this->leftDots(); |
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if ($leftDots > 2) { |
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$result['leftDots'] = '...'; |
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} |
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if ($leftDots > 0) { |
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foreach (array_reverse(range($this->page - 1, $leftDots)) as $value) { |
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$result[$value] = $value; |
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} |
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if (isset($result[1])) { |
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unset($result[1]); |
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} |
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} |
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return $result; |
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} |
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private function rightDots(): int |
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{ |
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return ($this->totalPages - 1) - ($this->page + $this->length); |
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} |
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/** |
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* @return array |
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*/ |
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private function rightPad(): array |
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{ |
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$result = []; |
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$rightDots = $this->rightDots(); |
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$array = $rightDots > 0 |
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? range($this->page + 1, $this->page + $this->length) |
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: ($this->page + 1 < $this->totalPages |
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? range($this->page + 1, $this->totalPages - 1) |
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: [] |
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); |
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foreach ($array as $value) { |
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$result[$value] = $value; |
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} |
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if ($rightDots > 0) { |
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$result['rightDots'] = '...'; |
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} |
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return $result; |
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} |
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private function end(): array |
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{ |
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$result = []; |
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if ($this->page !== $this->totalPages) { |
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$result['last'] = $this->totalPages; |
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} |
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if ($this->totalPages - $this->page > 0) { |
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$result['plus'] = $this->page + 1; |
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} |
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return $result; |
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} |
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/** |
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* @return array |
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*/ |
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public function get(): array |
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{ |
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return array_merge($this->start(), $this->leftPad(), ['current' => $this->page], $this->rightPad(), $this->end()); |
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} |
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} |
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Compolomus /
Pagination
