gusucode.com > 同城苏州黄页系统php源码程序 > lib/pageIdx.class.php
<?
/**********
| +---------------------------------------------------
| CLASS NAME: PageBar
| +---------------------------------------------------
| Author: Arvan [E-mail:Arvan@5n9.com QQ:8817776]
| Create date: 2003-7-17
| Note:
| Do for pagination
| +---------------------------------------------------
| Warning: no...
| +---------------------------------------------------
**********/
class pageIdx
{
var $total;
var $onepage;
var $num;
var $page;
var $total_page;
var $offset;
var $linkhead;
var $non_link_color;//無連接的顔色CSS名
var $link_color;//有連接
var $curr_page_color;//當前页
function pageIdx($total, $onepage,$non_link_color='', $link_color='',$curr_page_color='', $form_vars='')
{
$this->non_link_color = $non_link_color;
$this->link_color = $link_color;
$this->curr_page_color=$curr_page_color;
$page = @$_GET['page'];
$this->total = $total;
$this->onepage = $onepage;
$this->total_page = ceil($total/$onepage);
if (empty($page))
{
$this->page = 1;
$this->offset = 0;
}
else
{
$this->page = $page;
$this->offset = ($page-1)*$onepage;
}
if (!empty($form_vars))
{
$vars = explode("|", $form_vars);
$chk = $vars[0];
$chk_value = $_POST["$chk"];
if (empty($chk_value))
{
$formlink = "";
}
else
{
for ($i=0; $i<sizeof($vars); $i++)
{
$var = $vars[$i];
$value = $_POST["$var"];
$addchar = $var."=".$value;
$formlink = $formlink.$addchar."&";
}
}
}
else
{
$formlink = "";
}
//echo $_SERVER['QUERY_STRING']."<br>";//exit;
$linkarr = explode("page=", $_SERVER['QUERY_STRING']);
$linkft = $linkarr[0];
//echo $formlink.":".$linkft.":".$_SERVER['QUERY_STRING'];exit;
if (empty($linkft))
{
$this->linkhead = $_SERVER['PHP_SELF']."?".$formlink;
}
else
{
$linkft = (substr($linkft, -1)=="&")?$linkft:$linkft."&";
$this->linkhead = $_SERVER['PHP_SELF']."?".$linkft.$formlink;
}
}
#End function PageBar();
function offset()
{
return $this->offset;
}
#End function offset();
function pre_page($char='')
{
$linkhead = $this->linkhead;
$page = $this->page;
$nolink = $this->non_link_color;
$havelink = $this->link_color;
$currpage = $this->curr_page_color;
if (empty($char))
{
$char = "<";
}
if ($page>1)
{
$pre_page = $page - 1;
return "[<a href=\"$linkhead"."page=$pre_page\" style=\"$havelink\">$char</a>]";
}
else
{
return "[<span style=\"$nolink\">$char</span>]";
}
}
#End function pre_page();
function next_page($char='')
{
$linkhead = $this->linkhead;
$total_page = $this->total_page;
$page = $this->page;
$nolink = $this->non_link_color;
$havelink = $this->link_color;
if (empty($char))
{
$char = ">";
}
if ($page<$total_page)
{
$next_page = $page + 1;
return "[<a href=\"$linkhead"."page=$next_page\" style=\"$havelink\">$char</a>]";
}
else
{
return "[<span style=\"$nolink\">$char</span>]";
}
}
#End function next_page();
function num_bar($num='', $left='', $right='')
{
$num = (empty($num))?10:$num;
$this->num = $num;
$mid = floor($num/2);
$last = $num - 1;
$page = $this->page;
$totalpage = $this->total_page;
$linkhead = $this->linkhead;
$left = (empty($left))?"[":$left;
$right = (empty($right))?"]":$right;
//$color = (empty($color))?"#ff0000":$color;
$style = $this->curr_page_color;//by eyes
$minpage = (($page-$mid)<1)?1:($page-$mid);
$maxpage = $minpage + $last;
if ($maxpage>$totalpage)
{
$maxpage = $totalpage;
$minpage = $maxpage - $last;
$minpage = ($minpage<1)?1:$minpage;
}
for ($i=$minpage; $i<=$maxpage; $i++)
{
$char = $i;
if ($i==$page)
{
$char = "$left<span style=\"$style\">$char</span>$right";
$linkchar = $char;
}
else
{
$linkchar = $left."<a href='$linkhead"."page=$i'>".$char."</a>".$right;
}
@$linkbar .= $linkchar;
}
return @$linkbar;
}
#End function num_bar();
function pre_group($char='')
{
$nolink = $this->non_link_color;
$havelink = $this->link_color;
$page = $this->page;
//$onepage = $this->onepage;
$linkhead = $this->linkhead;
$num = $this->num;
$mid = floor($num/2);
$minpage = (($page-$mid)<1)?1:($page-$mid);
$char = (empty($char))?"上10页":$char;
$pgpage = ($minpage>$num)?$minpage-$mid:1;
if ($page>6)
{
return "[<a href='$linkhead"."page=$pgpage' style=\"$havelink\">".$char."</a>]";
}
else
{
return "[<span style=\"$nolink\">$char</span>]";
}
}
#End function pre_group();
function next_group($char='')
{
$nolink = $this->non_link_color;
$havelink = $this->link_color;
$page = $this->page;
$linkhead = $this->linkhead;
$totalpage = $this->total_page;
$num = $this->num;
$mid = floor($num/2);
$last = $num;
$minpage = (($page-$mid)<1)?1:($page-$mid);
$maxpage = $minpage + $last;
if ($maxpage>$totalpage)
{
$maxpage = $totalpage;
$minpage = $maxpage - $last;
$minpage = ($minpage<1)?1:$minpage;
}
$char = (empty($char))?"下10页":$char;
$ngpage = ($totalpage>$maxpage+$last)?$maxpage + $mid:$totalpage;
if (($page+4)<$totalpage)
{
return "[<a href='$linkhead"."page=$ngpage' style=\"$havelink\">".$char."</a>]";
}
else
{
return "[<span style=\"$nolink\">$char</span>]";
}
}
#End function next_group();
/*
first page
add by eyes 2004.12.19
當只有總页數爲1時，不顯示
*/
function first_page($char='')
{
$nolink = $this->non_link_color;
$havelink = $this->link_color;
$linkhead = $this->linkhead;
//$page = $this->page;
$totalpage = $this->total_page;
if (empty($char))
{
$char = "上一页";
}
if ($totalpage>1)
{
$first_page = 1;
return "[<a href=\"$linkhead"."page=$first_page\" style=\"$havelink\">$char</a>]";
}
else
{
return "[<span style=\"$nolink\">$char</span>]";
}
}//end first_page
/*
last page
add by eyes 2004.12.19
當只有總页數爲1時，不顯示
*/
function last_page($char='')
{
$nolink = $this->non_link_color;
$havelink = $this->link_color;
$linkhead = $this->linkhead;
//$page = $this->page;
$totalpage = $this->total_page;
if (empty($char))
{
$char = "最后一页";
}
if ($totalpage>1)
{
//$first_page = 1;
return "[<a href=\"$linkhead"."page=$totalpage\" style=\"$havelink\">$char</a>]";
}
else
{
return "[<span style=\"$nolink\">$char</span>]";
}
}//end last_page
function whole_num_bar($num='', $color='')
{
$num_bar = $this->num_bar($num, $color);
$pre_group = $this->pre_group();
$pre_page = $this->pre_page();
$next_page = $this->next_page();
$next_group = $this->next_group();
$first_page = $this->first_page();
$last_page = $this->last_page();
return $first_page.$pre_group.$pre_page.$num_bar.$next_page.$next_group.$last_page;
}
#End function whole_bar();
function Jump_form()
{
$linkhead = $this->linkhead;
$total = $this->total_page;
$form = <<<EOT
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<script language="javascript">
function jump(linkhead, total, page)
{
var page = (page.value>total)?total:page.value;
var page = (page<1)?1:page;
location.href = linkhead + "page=" + page;
return false;
}
</script>
<form name="pagebarjumpform" method="post" onSubmit="return jump('$linkhead', $total, this.form.page)"><tr>
<td>
<input name="page" type="text" size="1">
<input type="button" name="Submit" value="GO" onClick="return jump('$linkhead', $total, this.form.page)">
</td>
</tr></form></table>
EOT;
return $form;
}
#End function Jump_form();
}
#End class PageBar;
/*****
//example
$total = 1000;
$onepage = 20;
$pb = new PageBar($total, $onepage);
$offset = $pb->offset();
$pagebar = $pb->whole_num_bar();
$jumpform = $pb->Jump_form();
echo $offset."<br>".$pagebar."<br>".$jumpform;
return:
0
[<<] [1][2][3][4][5][6][7][8][9][10][>][>>]
------------------
一些說明:
這個類並不是完美的，請其他高手指出其中的不足
$this->offset() 不是沒有用的，它返回的是mysql query的指針,如果你用于mysql查詢，它就是limit $offset //$offste = $this->offset();
$form_vars 是指表單變量 //這個還沒有應用,剛才經過測試，確認已經無錯，表單變量名用"|"隔開,如"action|searchkey"
$char / /你自己設定的上一页，下一页，上一組，下一組的字符，有默認值， 可以不設
$color //當前页的突顯顔色，也有默認值
你可以把上一页，下一页等單獨輸出，也可以結合數字條一塊輸出，當然還可以加上表單跳轉.
功能還是有所欠缺的，不過其他的我是懶得加了。
*****/
?>