php分页详细教程，一款供PHP初学者学习的分页类库

* $page = new Page();

* $page->init(1000 20);

* $page->setNotActiveTemplate('<span> {a} </span>');

* $page->setActiveTemplate('{a}');

* echo $page->show();

*/

class Page {

/**

* 总条数

*/

private $total;

/**

* 每页大小

*/

private $pageSize;

/**

* 总页数

*/

private $pageNum;

/**

* 当前页

*/

private $page;

/**

* 地址

*/

private $uri;

/**

* 分页变量

*/

private $pageParam;

/**

* LIMIT XX XX

*/

private $limit;

/**

* 数字分页显示

*/

private $listnum = 8;

/**

* 分页显示模板

* 可用变量参数

* {total} 总数据条数

* {pagesize} 每页显示条数

* {start} 本页开始条数

* {end} 本页结束条数

* {pagenum} 共有多少页

* {frist} 首页

* {pre} 上一页

* {next} 下一页

* {last} 尾页

* {list} 数字分页

* {goto} 跳转按钮

*/

private $template = '<div><span>共有{total}条数据</span><span>每页显示{pagesize}条数据</span> <span>本页{start}-{end}条数据</span><span>共有{pagenum}页</span><ul>{frist}{pre}{list}{next}{last}{goto}</ul></div>';

/**

* 当前选中的分页链接模板

*/

private $activeTemplate = '<li class="active"><a href="javascript:;">{text}</a></li>';

/**

* 未选中的分页链接模板

*/

private $notActiveTemplate = '<li><a href="{url}">{text}</a></li>';

/**

* 显示文本设置

*/

private $config = array('frist' => '首页' 'pre' => '上一页' 'next' => '下一页' 'last' => '尾页');

/**

* 初始化

* @param type $total 总条数

* @param type $pageSize 每页大小

* @param type $param url附加参数

* @param type $pageParam 分页变量

*/

public function init($total $pageSize $param = '' $pageParam = 'page') {

$this->total = intval($total);

$this->pageSize = intval($pageSize);

$this->pageParam = $pageParam;

$this->uri = $this->geturi($param);

$this->pageNum = ceil($this->total / $this->pageSize);

$this->page = $this->setPage();

$this->limit = $this->setlimit();

}

/**

* 设置分页模板

* @param type $template 模板配置

*/

public function setTemplate($template) {

$this->template = $template;

}

/**

* 设置选中分页模板

* @param type $activeTemplate 模板配置

*/

public function setActiveTemplate($activeTemplate) {

$this->activeTemplate = $activeTemplate;

}

/**

* 设置未选中分页模板

* @param type $notActiveTemplate 模板配置

*/

public function setNotActiveTemplate($notActiveTemplate) {

$this->notActiveTemplate = $notActiveTemplate;

}

/**

* 返回分页

* @return type

*/

public function show() {

return str_ireplace(array(

'{total}'

'{pagesize}'

'{start}'

'{end}'

'{pagenum}'

'{frist}'

'{pre}'

'{next}'

'{last}'

'{list}'

'{goto}'

) array(

$this->total

$this->setPageSize()

$this->star()

$this->end()

$this->pageNum

$this->frist()

$this->prev()

$this->next()

$this->last()

$this->pagelist()

$this->gopage()

) $this->template);

}

/**

* 获取limit起始数

* @return type

*/

public function getOffset() {

return ($this->page - 1) * $this->pageSize;

}

/**

* 设置LIMIT

* @return type

*/

private function setlimit() {

return "limit " . ($this->page - 1) * $this->pageSize . " {$this->pageSize}";

}

/**

* 获取limit

* @param type $args

* @return type

*/

public function __get($args) {

if ($args == "limit") {

return $this->limit;

} else {

return null;

}

}

/**

* 初始化当前页

* @return int

*/

private function setPage() {

if (!empty($_GET[$this->pageParam])) {

if ($_GET[$this->pageParam] > 0) {

if ($_GET[$this->pageParam] > $this->pageNum)

return $this->pageNum;

else

return $_GET[$this->pageParam];

}

}

return 1;

}

/**

* 初始化url

* @param type $param

* @return string

*/

private function geturi($param) {

$url = $_SERVER['REQUEST_URI'] . (strpos($_SERVER['REQUEST_URI'] "?") ? "" : "?") . $param;

$parse = parse_url($url);

if (isset($parse["query"])) {

parse_str($parse["query"] $params);

unset($params["page"]);

$url = $parse["path"] . "?" . http_build_query($params);

return $url;

} else {

return $url;

}

}

/**

* 本页开始条数

* @return int

*/

private function star() {

if ($this->total == 0) {

return 0;

} else {

return ($this->page - 1) * $this->pageSize 1;

}

}

/**

* 本页结束条数

* @return type

*/

private function end() {

return min($this->page * $this->pageSize $this->total);

}

/**

* 设置当前页大小

* @return type

*/

private function setPageSize() {

return $this->end() - $this->star() 1;

}

/**

* 首页

* @return type

*/

private function frist() {

$html = '';

if ($this->page == 1) {

$html .= $this->replace("{$this->uri}&page=1" $this->config['frist'] true);

} else {

$html .= $this->replace("{$this->uri}&page=1" $this->config['frist'] false);

}

return $html;

}

/**

* 上一页

* @return type

*/

private function prev() {

$html = '';

if ($this->page > 1) {

$html .= $this->replace($this->uri.'&page='.($this->page - 1) $this->config['pre'] false);

} else {

$html .= $this->replace($this->uri.'&page='.($this->page - 1) $this->config['pre'] true);

}

return $html;

}

/**

* 分页数字列表

* @return type

*/

private function pagelist() {

$linkpage = "";

$lastlist = floor($this->listnum / 2);

for ($i = $lastlist; $i >= 1; $i--) {

$page = $this->page - $i;

if ($page >= 1) {

$linkpage .= $this->replace("{$this->uri}&page={$page}" $page false);

} else {

continue;

}

}

$linkpage .= $this->replace("{$this->uri}&page={$this->page}" $this->page true);

for ($i = 1; $i <= $lastlist; $i ) {

$page = $this->page $i;

if ($page <= $this->pageNum) {

$linkpage .= $this->replace("{$this->uri}&page={$page}" $page false);

} else {

break;

}

}

return $linkpage;

}

/**

* 下一页

* @return type

*/

private function next() {

$html = '';

if ($this->page < $this->pageNum) {

$html .= $this->replace($this->uri.'&page='.($this->page 1) $this->config['next'] false);

} else {

$html .= $this->replace($this->uri.'&page='.($this->page 1) $this->config['next'] true);

}

return $html;

}

/**

* 最后一页

* @return type

*/

private function last() {

$html = '';

if ($this->page == $this->pageNum) {

$html .= $this->replace($this->uri.'&page='.($this->pageNum) $this->config['last'] true);

} else {

$html .= $this->replace($this->uri.'&page='.($this->pageNum) $this->config['last'] false);

}

return $html;

}

/**

* 跳转按钮

* @return string

*/

private function gopage() {

$html = '';

$html.=' <input type="text" value="' . $this->page . '" onkeydown="javascript:if(event.keyCode==13){var page=(this.value>' . $this->pageNum . ')?' . $this->pageNum . ':this.value;location=\'' . $this->uri . '&page=\' page \'\'}" style="width:25px;"/><input type="button" onclick="javascript:var page=(this.previousSibling.value>' . $this->pageNum . ')?' . $this->pageNum . ':this.previousSibling.value;location=\'' . $this->uri . '&page=\' page \'\'" value="GO"/>';

return $html;

}

/**

* 模板替换

* @param type $replace 替换内容

* @param type $result 条件

* @return type

*/

private function replace($url $text $result = true) {

$template = ($result ? $this->activeTemplate : $this->notActiveTemplate);

$html = str_replace('{url}' $url $template);

$html = str_replace('{text}' $text $html);

return $html;

}

}