<?php<br />
class
paging {<br />
public
static
$count
= 0;<br />
public
static
$size
= 0;<br />
public
static
$page
= 0;<br />
<br />
<br />
static
function
prepare(
$sql
,
$pagesize
=
''
) <br />
{
$pagesize
=constant(
"page_size"
);<br />
$page
= isset(
$_GET
[
'page'
]) ?
$_GET
[
'page'
] : 1;<br />
$pageon
= (
$page
- 1) *
$pagesize
;<br />
$sql
= preg_replace(
'/select\s/i'
,
'$0SQL_CALC_FOUND_ROWS '
,
$sql
) .
" limit $pageon, $pagesize"
;<br />
$rs
= mysql_query(
$sql
);<br />
$p
= mysql_query(
'SELECT FOUND_ROWS()'
);<br />
list(self::
$count
)= mysql_fetch_row(
$p
);<br />
self::
$size
=
$pagesize
=10;<br />
self::
$page
=
$page
;<br />
return
$rs
;<br />
}<br />
<br />
<br />
<br />
static
function
bar(
$tpl
=
''
) {<br />
if
(!
$tpl
)
$tpl
=
'<a href=?reset>首页</a> <a href=?prve>上一页</a> <a href=?next>下一页</a> <a href=?end>尾页</a>'
;<br />
$count
=
ceil
(self::
$count
/ constant(
"page_size"
));<br />
$page
= self::
$page
;<br />
unset(
$_GET
[
'page'
]);<br />
$d
=
array
(<br />
'reset'
=> 1,<br />
'prve'
=>
$page
> 1 ?
$page
- 1 : 1,<br />
'next'
=>
$page
<
$count
?
$page
+ 1 :
$count
,<br />
'end'
=>
$count
,<br />
);<br />
foreach
(
$d
as
$k
=>
$v
) {<br />
$_GET
[
'page'
] =
$v
;<br />
$tpl
=
str_replace
(
$k
, http_build_query(
$_GET
),
$tpl
);<br />
}<br />
return
$tpl
.
"当前第"
.
$page
.
"页|共"
.
$count
.
"页"
;<br />
}<br />
}<br />
<br />
?>