thinkphp/library/think/Paginator.php

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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2018 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: zhangyajun <448901948@qq.com>
// +----------------------------------------------------------------------

namespace think;

use ArrayAccess;
use ArrayIterator;
use Countable;
use IteratorAggregate;
use JsonSerializable;
use Traversable;

abstract class Paginator implements ArrayAccess, Countable, IteratorAggregate, JsonSerializable
{
    /** @var bool 是否为简洁模式 */
    protected $simple = false;

    /** @var Collection 数据集 */
    protected $items;

    /** @var integer 当前页 */
    protected $currentPage;

    /** @var  integer 最后一页 */
    protected $lastPage;

    /** @var integer|null 数据总数 */
    protected $total;

    /** @var  integer 每页的数量 */
    protected $listRows;

    /** @var bool 是否有下一页 */
    protected $hasMore;

    /** @var array 一些配置 */
    protected $options = [
        'var_page' => 'page',
        'path'     => '/',
        'query'    => [],
        'fragment' => '',
    ];

    /** @var mixed simple模式下的下个元素 */
    protected $nextItem;

    public function __construct($items, $listRows, $currentPage = null, $total = null, $simple = false, $options = [])
    {
        $this->options = array_merge($this->options, $options);

        $this->options['path'] = '/' != $this->options['path'] ? rtrim($this->options['path'], '/') : $this->options['path'];