/**
* 筛选功能测试
*/
function shaixuan()
{
load_function('content', 'content');
//type = 套餐类别,area = 区域，city＝城市,st=排序类型,asc=降序，升序 0升序，1降序
//$linkurl = "index.php?m=demo&f=test&v=shaixuan&page=1&pinpai=1&renqun=1&type=2&price=100_200&area=2&tese=1_2_3&st=0&asc=1";
$urlrule = 'index.php?m=demo&f=test&v=shaixuan&pinpai={$pinpai}&renqun={$renqun}&type={$type}&price={$price}&area={$area}&tese={$tese}&st={$st}&asc={$asc}&page={$page}';
$_POST['page_urlrule'] = 'tuan-{$pinpai}-{$renqun}-{$type}-{$price}-{$area}-{$tese}-{$st}-{$asc}-{$page}.html';
$page_fields = array();
$page_fields['pinpai'] = 2;
$page_fields['renqun'] = 3;
$page_fields['type'] = 4;
$page_fields['price'] = '100_200';
$page_fields['area'] = 5;
$page_fields['tese'] = '1_2_3';
$page_fields['st'] = '6';
$page_fields['asc'] = 0;
echo _pageurl($_POST['page_urlrule'], 2, $page_fields);
echo "<br>";
$_POST['page_fields'] = $page_fields;
echo filter('pinpai', '88');
echo "<br>";
echo filter('renqun', '55');
}
/**
* 分页函数
*
* @param $num 信息总数
* @param $current_page 当前分页
* @param $pagesize 每页显示数
* @param $urlrule URL规则
* @param $variables url规则替换变量
* @param $limit 显示分页数列
* @return 分页
*/
function pages($num, $current_page, $pagesize = 20, $urlrule = '', $variables = array(), $limit = 10)
{
$output = '';
$num = intval($num);
$pagesize = intval($pagesize);
$maxpage = ceil($num / $pagesize);
if ($current_page > $maxpage) {
$current_page = $maxpage;
}
if ($urlrule != '' && isset($_GET['_variables'])) {
$urlrule = $_GET['_variables'];
} elseif ($urlrule == '') {
$par = 'page={$page}';
$url = URL();
$pos = strpos($url, '?');
if ($pos === FALSE) {
$url .= '?' . $par;
} else {
$querystring = substr(strstr($url, '?'), 1);
parse_str($querystring, $pars);
$query_array = array();
foreach ($pars as $k => $v) {
if ($k != 'page') {
$query_array[$k] = $v;
}
}
$querystring = http_build_query($query_array) . '&' . $par;
$urlrule = substr($url, 0, $pos) . '?' . $querystring;
}
}
//上一页
$pageup = max($current_page - 1, 1);
$output .= '<li title="按住向左方向键 向前翻页"><a href="' . _pageurl($urlrule, $pageup, $variables) . '"><</a></li>';
//第一页
$active = '';
if ($current_page == 1) {
$active = 'class="active"';
}
$output .= '<li><a ' . $active . ' href="' . _pageurl($urlrule, 1, $variables) . '">1</a></li>';
$difference = $limit + 1;
$difference2 = ceil($limit / 2 - 1);
$startpage = $current_page - $difference2;
$endpage = $current_page + $difference2;
if ($difference >= $maxpage) {
$startpage = 2;
$endpage = $maxpage - 1;
} else {
if ($startpage <= 1) {
$endpage = $difference - 1;
$startpage = 2;
} elseif ($endpage >= $maxpage) {
$startpage = $maxpage - ($difference - 2);
$endpage = $maxpage - 1;
}
if ($current_page <= $difference2 + 1) {
$endpage += 1;
}
if ($maxpage - $current_page <= $difference2) {
$startpage -= 1;
}
}
for ($i = $startpage; $i <= $endpage; $i++) {
$active = '';
if ($current_page == $i) {
$active = 'class="active"';
}
$output .= '<li><a href="' . _pageurl($urlrule, $i, $variables) . '" ' . $active . '>' . $i . '</a></li>';
}
//最后一页
if ($maxpage > 1) {
$active = '';
if ($current_page == $maxpage) {
$active = 'class="active"';
}
$output .= '<li><a ' . $active . ' href="' . _pageurl($urlrule, $maxpage, $variables) . '">' . $maxpage . '</a></li>';
}
//下一页
$pagedown = $current_page + 1;
if ($pagedown >= $maxpage) {
$pagedown = $maxpage;
}
//热键
$output .= '<input type="hidden" id="page-up" value="' . _pageurl($urlrule, $pageup, $variables) . '">';
$output .= '<input type="hidden" id="page-next" value="' . _pageurl($urlrule, $pagedown, $variables) . '">';
$output .= '<script>$(this).focus();</script>';
$output .= '<li title="按住向右方向键 向后翻页"><a href="' . _pageurl($urlrule, $pagedown, $variables) . '">></a></li>';
return $output;
}
/**
* @param $field 要筛选的字段
* @param $value 值
*/
function filter($field, $value)
{
$page_fields = $_POST['page_fields'];
$page_fields[$field] = $value;
return _pageurl($_POST['page_urlrule'], 1, $page_fields);
}
