PHP分页函数

分页|函数

//分页函数

function genpage(&$sql,$page_size=20)

{

global $prepage,$nextpage,$pages,$sums; //out param

$page = $_GET["page"]>=1?$_GET["page"]:1;

$eachpage = $page_size;

$pagesql = strstr($sql," from ");

$pagesql = "select count(*) as ids ".$pagesql;

$result = mysql_query($pagesql);

if($rs = mysql_fetch_array($result)) $sums = $rs[0];

$pages = ceil(($sums-0.5)/$eachpage)-1;

$pages = $pages>=0?$pages:0;

$prepage = ($page>0)?$page-1:0;

$nextpage = ($page

$startpos = $page*$eachpage;

$sql .=" limit $startpos,$eachpage ";

}

//显示分页

function showpage()

{

global $page,$pages,$prepage,$nextpage,$queryString; //param from genpage function
$shownum =10/2;

$startpage = ($page>=$shownum)?$page-$shownum:0;

$endpage = ($page+$shownum

echo "共".($pages+1)."页: ";

if($page>0)echo "第一页";

if($startpage>0)

echo " ... «";

for($i=$startpage;$i

{

if($i==$page) echo " [".($i+1)."] ";

else echo " ".($i+1)." ";

}

if($endpage

echo "» ... ";

if($page

echo "最后页";

}

?>

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调用：

PHP代码:-------------------------------------------------------------------------------- $sql = "select * from table1 where 1 order by id desc "; genpage($sql); //只需要正常代码加上这一行就ok。 $result =mysql_query($sql);while($rs = mysql_fetch_array($result)){//display}showpage(); //显示页?>