Discuz的分页函数

public static function multi($num, $perpage, $curpage, $mpurl, $maxpages = 0, $page = 10, $autogoto = FALSE, $simple = FALSE, $jsfunc = FALSE) {global $_G;$ajaxtarget = !empty($_GET['ajaxtarget']) ? " ajaxtarget=\&;".dhtmlspecialchars($_GET['ajaxtarget'])."\&; " : '';$a_name = '';if(strpos($mpurl, '#') !== FALSE) {$a_strs = explode('#', $mpurl);$mpurl = $a_strs[0];$a_name = '#'.$a_strs[1];}if($jsfunc !== FALSE) {$mpurl = 'javascript:'.$mpurl;$a_name = $jsfunc;$pagevar = '';} else {$pagevar = 'page=';}if(defined('IN_ADMINCP')) {$shownum = $showkbd = TRUE;$showpagejump = FALSE;$lang['prev'] = '&lsaquo;&lsaquo;';$lang['next'] = '&rsaquo;&rsaquo;';} else {$shownum = $showkbd = FALSE;$showpagejump = TRUE;if(defined('IN_MOBILE') && !defined('TPL_DEFAULT')) {$lang['prev'] = lang('core', 'prevpage');$lang['next'] = lang('core', 'nextpage');} else {$lang['prev'] = '&nbsp;&nbsp;';$lang['next'] = lang('core', 'nextpage');}$lang['pageunit'] = lang('core', 'pageunit');$lang['total'] = lang('core', 'total');$lang['pagejumptip'] = lang('core', 'pagejumptip');}if(defined('IN_MOBILE') && !defined('TPL_DEFAULT')) {$dot = '..';$page = intval($page) < 10 && intval($page) > 0 ? $page : 4 ;} else {$dot = '...';}$multipage = '';if($jsfunc === FALSE) {$mpurl .= strpos($mpurl, '?') !== FALSE ? '&amp;' : '?';}$realpages = 1;$_G['page_next'] = 0;$page -= strlen($curpage) - 1;if($page <= 0) {$page = 1;}if($num > $perpage) {$offset = floor($page * 0.5);$realpages = @ceil($num / $perpage);$curpage = $curpage > $realpages ? $realpages : $curpage;$pages = $maxpages && $maxpages < $realpages ? $maxpages : $realpages;if($page > $pages) {$from = 1;$to = $pages;} else {$from = $curpage - $offset;$to = $from + $page - 1;if($from < 1) {$to = $curpage + 1 - $from;$from = 1;if($to - $from < $page) {$to = $page;}} elseif($to > $pages) {$from = $pages - $page + 1;$to = $pages;}}$_G['page_next'] = $to;$multipage = ($curpage - $offset > 1 && $pages > $page ? '<a href="'.$mpurl.$pagevar.'1'.$a_name.'" class="first"'.$ajaxtarget.'>1 '.$dot.'</a>' : '').($curpage > 1 && !$simple ? '<a href="'.$mpurl.$pagevar.($curpage - 1).$a_name.'" class="prev"'.$ajaxtarget.'>'.$lang['prev'].'</a>' : '');for($i = $from; $i <= $to; $i++) {$multipage .= $i == $curpage ? '<strong>'.$i.'</strong>' :'<a href="'.$mpurl.$pagevar.$i.($ajaxtarget && $i == $pages && $autogoto ? '#' : $a_name).'"'.$ajaxtarget.'>'.$i.'</a>';}$multipage .= ($to < $pages ? '<a href="'.$mpurl.$pagevar.$pages.$a_name.'" class="last"'.$ajaxtarget.'>'.$dot.' '.$realpages.'</a>' : '').($showpagejump && !$simple && !$ajaxtarget ? '<label><input type="text" name="custompage" class="px" size="2" title="'.$lang['pagejumptip'].'" value="'.$curpage.'" onkeydown="if(event.keyCode==13) {window.location=\''.$mpurl.$pagevar.''+this.value; doane(event);}" /><span title="'.$lang['total'].' '.$pages.' '.$lang['pageunit'].'"> / '.$pages.' '.$lang['pageunit'].'</span></label>' : '').($curpage < $pages && !$simple ? '<a href="'.$mpurl.$pagevar.($curpage + 1).$a_name.'" class="nxt"'.$ajaxtarget.'>'.$lang['next'].'</a>' : '').($showkbd && !$simple && $pages > $page && !$ajaxtarget ? '<kbd><input type="text" name="custompage" size="3" onkeydown="if(event.keyCode==13) {window.location=\''.$mpurl.$pagevar.''+this.value; doane(event);}" /></kbd>' : '');$multipage = $multipage ? '<div class="pg">'.($shownum && !$simple ? '<em>&nbsp;'.$num.'&nbsp;</em>' : '').$multipage.'</div>' : '';}$maxpage = $realpages;return $multipage;}

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