php分页函数

前端调用

<tr><td colspan="5" align="right">{$pagebar1}</td></tr>

index.php

$page = $_REQUEST['page'] == '' ? 1 : $_REQUEST['page'];
$url = "my_task.php";
$per = 12;
$start = ( $page - 1 ) * $per;
unset( $_REQUEST['page'] );
/**
* 我的任务列表
* $pagebar  分页函数  functionn.php
*/
$sql="SELECT  count(*)  FROM  task  where user_id='".$_SESSION['user_id']."'    order by status,create_time DESC ";
$total=$db->getone($sql);
$pagebar1 = pagebar( $url, array("type"=>"mytask"), 10, 1, $total );
$mytasklimit="LIMIT  0,10 ";

分页函数
pagebar_lib.php

//分页
function pagebar( $url, $param, $limit, $page, $total, $type = 0 ) {
if( $total < 0 ) {
return false;
}
if( $url == "" ) {
return false;
}
$link = $url . "?";
if (is_array($param)) {
foreach ($param as $str_key => $str_value) {
$link = $link . "$str_key=" . urlencode($str_value) . "&";
}
}
$int_pages = ceil($total / $limit);
if ($page < 1) {
$page = 1;
}
if ($page > $int_pages) {
$page = $int_pages;
}
$start_url = $link . "page=1";
$end_url = $link . "page=$int_pages";
$pre_url = $link . "page=" . ( $page - 1 );
$next_url = $link . "page=" . ( $page + 1 );
if( $page < 6 ){
/**
* $start_page  从第几页开始
* $end_page    显示到第几页
*/
$start_page = 1;
// $end_page = 7;
$end_page = 2;
}else{
/**
* $start_page  从第几页开始
* $end_page    显示到第几页
*/
// $start_page = $page -5;
$start_page = $page -1;
$end_page = $page +1;
}
if( $end_page > $int_pages ){
$end_page = $int_pages;
}
$urls = null;
/**  THE URL */
for( $i = $start_page, $j = 0; $i <= $end_page; $i++, $j++ ){
$temp_url = $link . "page=$i";
if( $i == $page ){
$urls[$j] = "<strong>[" . $i . "]</strong>&nbsp;";
}else{
$urls[$j] = "<a href=\"$temp_url\">[" . $i . "]</a>&nbsp;";
}
}
$str_html="";
if( is_array( $urls ) ){
$str_html = "共&nbsp;".$total."&nbsp;条信息&nbsp;&nbsp;共&nbsp;".$int_pages."&nbsp;页&nbsp;&nbsp;". $str_html . "<a href=\"$start_url\" text=\回第1页\>首页</a>&nbsp;&nbsp;";
if( $page > 1 ){
$str_html = $str_html . "<a href=\"$pre_url\">上页</a>&nbsp;&nbsp;";
}else{
$str_html = $str_html . "上页&nbsp;&nbsp;";
}
if( $type == 0 ){
foreach ($urls as $sub_url) {
$str_html = $str_html . $sub_url;
}
}
$str_html = $str_html . "&nbsp;";
if( $page >= $int_pages ){
$str_html = $str_html . "下页&nbsp;&nbsp;";
}else{
$str_html = $str_html . "<a href=\"$next_url\">下页</a>&nbsp;&nbsp";
}
if( $type == 0 ){
$str_html = $str_html . "<a href=\"$end_url\" text=\"到第$int_pages\">尾页</a> &nbsp;&nbsp;跳到 <input type=text size=4 onBlur=window.location.href='$pre_url&page='+this.value  /> 页 ";
return $str_html;
}
if( $type == 1 ){
$str_html = $str_html . "<a href=\"$end_url\" text=\"到第$int_pages\">尾页</a>";
return $str_html;
}
}
return false;
}