if ($i==$pg){
return " <font class='".$this->style."'>".$i."</font>";
}else{
return " <a href=".Pager::replacepg($this->url,5,$i)." class='".$this->style."'><u>".$i."</u></a>";
}
}
//生成上一页等信息的函数
function gotoback($pg){
if ($pg-1>0){
return $this->gotoback=" <a href=".Pager::replacepg($this->url,3,0)." class='".$this->style."'>首页</a> <a href=".Pager::replacepg($this->url,2,0)." class='".$this->style."'>上一页</a>";
}else{
return $this->gotoback="<span class='".$this->style."'>首页 上一页</span> ";
}
}
//生成下一页等信息的函数
function gotonext($pg,$page){
if ($pg < $page){
return " <a href=".Pager::replacepg($this->url,1,0)." class='".$this->style."'>下一页</a> <a href=".Pager::replacepg($this->url,4,0)." class='".$this->style."'>尾页</a>";
}else{
return " <span class='".$this->style."'>下一页 尾页</span>";
}
}
//处理url中$pg的方法,用于自动生成pg=x
function replacepg($url,$flag,$i){
if ($flag == 1){
$temp_pg = $this->pg;
return str_replace("pg=".$temp_pg,"pg=".($this->pg+1),$url);
}else if($flag == 2) {
$temp_pg = $this->pg;
return str_replace("pg=".$temp_pg,"pg=".($this->pg-1),$url);
}else if($flag == 3) {
$temp_pg = $this->pg;
return str_replace("pg=".$temp_pg,"pg=1",$url);
}else if($flag == 4){
$temp_pg = $this->pg;
return str_replace("pg=".$temp_pg,"pg=".$this->page,$url);
}else if($flag == 5){
$temp_pg = $this->pg;
return str_replace("pg=".$temp_pg,"pg=".$i,$url);
}else{
return $url;
}
}
//获得当前URL的方法
function getUrl(){
$url="http://".$_SERVER["HTTP_HOST"];
if(isset($_SERVER["REQUEST_URI"])){
$url.=$_SERVER["REQUEST_URI"];
}else{
$url.=$_SERVER["PHP_SELF"];
if(!empty($_SERVER["QUERY_STRING"])){
$url.="?".$_SERVER["QUERY_STRING"];
}
}
//在当前的URL里加入pg=x字样
if (!ereg("(pg=|PG=|pG=|Pg=)", $url)){
if (!strpos($url,"?")){
$url = $url."?pg=1";
}else{
$url = $url."&pg=1";
}
}
return $url;
}
}
?>
