57 lines
1.9 KiB
PHP
Executable File
57 lines
1.9 KiB
PHP
Executable File
<?php
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require_once('FacilityDataSet.php');
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class Paginator {
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protected $_pages, $_totalPages, $_rowLimit, $_pageMatrix, $_rowCount;
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public function __construct($rowLimit, $dataset) {
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$this->_rowLimit = $rowLimit;
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$this->_totalPages = $this->calculateTotalPages($dataset['count']);
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$this->_rowCount = $dataset['count'];
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$this->_pages = $dataset['dataset'];
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$this->_pageMatrix = $this->Paginate();
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}
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public function getTotalPages() {
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return $this->_totalPages;
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}
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private function calculateTotalPages(int $count): int {
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return $count > 0 ? ceil($count / $this->_rowLimit) : 0;
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}
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public function Paginate(): array {
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$pageMatrix = [];
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for ($i = 0; $i < $this->_totalPages; $i++) {
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$page = [];
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$start = $i * $this->_rowLimit;
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$end = min($start + $this->_rowLimit, $this->_rowCount); // Ensure within bounds
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for ($j = $start; $j < $end; $j++) {
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$page[] = $this->_pages[$j];
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}
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$pageMatrix[$i] = $page;
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}
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return $pageMatrix;
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}
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public function getPageFromUri(): int {
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// Retrieve 'page' parameter and default to 0 if missing or invalid
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return filter_input(INPUT_GET, 'page', FILTER_VALIDATE_INT, [
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'options' => ['default' => 0, 'min_range' => 0] // Default to 1 if invalid or missing
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]);
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}
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public function getPage(int $pageNumber): array {
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if ($pageNumber < 0 || $pageNumber >= $this->_totalPages) {
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return []; // Return an empty array if the page number is invalid
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}
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return $this->_pageMatrix[$pageNumber];
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}
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public function countPageResults(int $pageNumber): int {
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if ($pageNumber < 0 || $pageNumber >= $this->_totalPages) {
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return 0; // Return 0 if the page number is invalid
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}
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return count($this->_pageMatrix[$pageNumber]);
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}
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} |