分享一个php分页类，自己写的，代码如下：
<?php
/**
* Created by PhpStorm.
* Desc: 分页类
* use: (new Page(200))->show();
*/
final class Page {
const PAGE_SIZE = 20; //默认每页数据量
private $_count; //数据总量
private $_pageSize; //每页数据量
private $_pages;
private $_curPage;
private $_curUrl;
private $_pageName;
final public function __construct($count, $pagesize = self::PAGE_SIZE, $page = 'page') {
$this->_count = $count;
$this->_pageSize = $pagesize;
$this->_pages = ceil($this->_count / $this->_pageSize);
$this->_pageName = $page;
$this->_curPage = isset($_REQUEST[$page]) ? abs(intval($_REQUEST[$page])) : 1;
$this->_getCurrentUrl();
}
private function _getCurrentUrl() {
$this->_curUrl = getCurrentUrl();
$this->_curUrl .= (false === strpos($this->_curUrl, '?')) ? '?' : '&';
}
private function _getIndex() {
if ($this->_curPage == 1) {
return '首页';
} else {
return '<a href="' . $this->_curUrl . $this->_pageName . '=1">首页</a>';
}
}
private function _getEnd() {
if ($this->_curPage == $this->_pages) {
return '末页';
} else {
return '<a href="' . $this->_curUrl . $this->_pageName . '=' . $this->_pages . '">末页</a>';
}
}
private function _getLast() {
if ($this->_curPage <= 1) {
return '上一页';
} else {
return '<a href="' . $this->_curUrl . $this->_pageName . '=' . ($this->_curPage - 1) . '">上一页</a>';
}
}
private function _getNext() {
if ($this->_curPage >= $this->_pages) {
return '下一页';
} else {
return '<a href="' . $this->_curUrl . $this->_pageName . '=' . ($this->_curPage + 1) . '">下一页</a>';
}
}
private function _getGoto() {
$str = '<input id="pageInput" value="' . $this->_curPage . '" type="text" /><input onclick="javascript:window.location.href=\'';
$str .= $this->_curUrl . $this->_pageName . '=\'+document.getElementById(\'pageInput\').value;" type="button" value="转到" />';
return $str;
}
private function _style() {
$str = '<style>';
$str .= '#pageBar{text-align:right;}';
$str .= '#pageBar #pageInput{width:40px;text-align:center;margin-right:3px;}';
$str .= '#pageBar span{margin:3px 5px;padding:0;}';
$str .= '</style>';
return $str;
}
final public function show() {
$limitStart = ($this->_curPage - 1) * $this->_pageSize;
if ($this->_curPage < $this->_pages) {
$limitEnd = $this->_curPage * $this->_pageSize;
} else {
$limitEnd = $this->_count;
}
echo $this->_style();
echo sprintf(
'<div id="pageBar"><span>共有数据 %d 条</span><span>每页显示 %d 条</span><span>当前 %d - %d 条</span>',
$this->_count,
$this->_pageSize,
$limitStart,
$limitEnd
);
if ($this->_count <= $this->_pageSize) {
echo '</div>';
return;
}
$indexLast = '<span>' . $this->_getIndex() . '</span><span>' . $this->_getLast() . '</span>';
$pageStr = '';
$endNext = '<span>' . $this->_getNext() . '</span><span>' . $this->_getEnd() . '</span>';
$goto = '<span>' . $this->_getGoto() . '</span>';
echo sprintf(
'%s%s%s%s</div>',
$indexLast,
$pageStr,
$endNext,
$goto
);
}
}该类会调用一个函数：
/**
* 获取当前请求的网址
* @return string
*/
function getCurrentUrl() {
$url = $_SERVER["REQUEST_URI"];
$_par = parse_url($url);
if (isset($_par['query'])) {
parse_str($_par['query'], $_query);
$url = $_par['path'] . '?' . http_build_query($_query);
}
return $url;
}