=$total_pages)?$total_pages:$page_current+1;
$page_start = ($page_current-5>0)?$page_current-5:0;
$page_end = ($page_start+10<$total_pages)?$page_start+10:$total_pages;
$page_start = $page_end-10;
if($page_start<0) $page_start = 0;
//判断$url中是否存在查询字符串
$parse_url = parse_url($url);
if(empty($parse_url["query"])){
$url = $url.'?';//若不存在，在$url后添加？
}else{
$url = $url.'&'; //若存在，在$url后添加&
}
if(empty($keyword)){
$navigator = "上一页 ";
for($i=$page_start;$i<$page_end;$i++){
$j = $i+1;
$navigator = $navigator."$j ";
}
$navigator = $navigator."下一页";
$navigator.= "
共".$total_records."条记录，共".$total_pages."页，当前是第".$page_current."页";
}else{
$keyword = $_GET["keyword"];
$navigator = "上一页 ";
for($i=$page_start;$i<$page_end;$i++){
$j = $i+1;
$navigator = $navigator."$j ";
}
$navigator =$navigator."下一页";
$navigator.= "
共".$total_records."条记录，共".$total_pages."页，当前是第".$page_current."页";
}
echo $navigator;
}
?>