php自定义分页类完整实例

<?php
header("content-type:text/html;charset=utf-8");
class subpages{
 private $each_disnums;//每页显示的条目数
 private $nums;//总条目数
 private $current_page;//当前被选中的页
 private $sub_pages;//每次显示的页数
 private $pagenums;//总页数
 private $page_array = array();//用来构造分页的数组
 private $subpage_link;//每个分页的链接
 //private $subpage_type;//显示分页的类型
/*
  当@subpage_type=1的时候为普通分页模式
     example：  共4523条记录,每页显示10条,当前第1/453页 [首页] [上页] [下页] [尾页]
     当@subpage_type=2的时候为经典分页样式
     example：  当前第1/453页 [首页] [上页] 1 2 3 4 5 6 7 8 9 10 [下页] [尾页]
 */
 function __construct($each_disnums,$nums,$current_page,$sub_pages,$subpage_link){
  $this->each_disnums=intval($each_disnums);
 $this->nums=intval($nums);
 if(!$current_page){
 $this->current_page=1;
 }else{
   $this->current_page=intval($current_page);
  }
 $this->sub_pages=intval($sub_pages);
  $this->pagenums=ceil($nums/$each_disnums);
  $this->subpage_link=$subpage_link;
  // $this->show_subpages($subpage_type);
 }
  // show_subpages函数用在构造函数里面。而且用来判断显示什么样子的分页
 /* function show_subpages($subpage_type){
   if($subpage_type == 1){
   $this->subpagecss1();
   }else if ($subpage_type == 2){
   $this->subpagecss2();
   }
  }
*/
  //用来给建立分页的数组初始化的函数。
 function initarray(){
   for($i=0;$i<$this->sub_pages;$i++){
   $this->page_array[$i]=$i;
 }
   return $this->page_array;
  }
  /* construct_num_page该函数使用来构造显示的条目
  即使：[1][2][3][4][5][6][7][8][9][10] */
 function construct_num_page(){
  if($this->pagenums < $this->sub_pages){
   $current_array=array();
   for($i=0;$i<$this->pagenums;$i++){
    $current_array[$i]=$i+1;
   }
   }else{
   $current_array=$this->initarray();
   if($this->current_page <= 3){
    for($i=0;$i<count($current_array);$i++){
     $current_array[$i]=$i+1;
    }
   }else if ($this->current_page <= $this->pagenums && $this->current_page > $this->pagenums - $this->sub_pages + 1 ){
    for($i=0;$i<count($current_array);$i++){
     $current_array[$i]=($this->pagenums)-($this->sub_pages)+1+$i;
    }
   }else{
    for($i=0;$i<count($current_array);$i++){
     $current_array[$i]=$this->current_page-2+$i;
    }
   }
  }
  return $current_array;
  }
 /*
  构造普通模式的分页
  共4523条记录,每页显示10条,当前第1/453页 [首页] [上页] [下页] [尾页]
  */
 function subpagecss1(){
  $subpagecss1str="";
  $subpagecss1str.="共".$this->nums."条记录，";
  $subpagecss1str.="每页显示".$this->each_disnums."条，";
  $subpagecss1str.="当前第".$this->current_page."/".$this->pagenums."页 ";
  if($this->current_page > 1){
   $firstpageurl=$this->subpage_link."1";
   $prewpageurl=$this->subpage_link.($this->current_page-1);
   $subpagecss1str.="[<a href='$firstpageurl'>首页</a>] ";
   $subpagecss1str.="[<a href='$prewpageurl'>上一页</a>] ";
  }else {
   $subpagecss1str.="[首页] ";
   $subpagecss1str.="[上一页] ";
  }
  if($this->current_page < $this->pagenums){
   $lastpageurl=$this->subpage_link.$this->pagenums;
   $nextpageurl=$this->subpage_link.($this->current_page+1);
   $subpagecss1str.=" [<a href='$nextpageurl'>下一页</a>] ";
   $subpagecss1str.="[<a href='$lastpageurl'>尾页</a>] ";
  }else {
   $subpagecss1str.="[下一页] ";
   $subpagecss1str.="[尾页]";
  }
  return $subpagecss1str; //在此可以设置显示的css样式
  }
 /*
  构造经典模式的分页
  当前第1/453页 [首页] [上页] 1 2 3 4 5 6 7 8 9 10 [下页] [尾页]
  */
 function subpagecss2(){
  $subpagecss2str="";
  $subpagecss2str.="当前第".$this->current_page."/".$this->pagenums."页 ";
 if($this->current_page > 1){
   $firstpageurl=$this->subpage_link."1";
   $prewpageurl=$this->subpage_link.($this->current_page-1);
   $subpagecss2str.="[<a href='$firstpageurl'>首页</a>] ";
   $subpagecss2str.="[<a href='$prewpageurl'>上一页</a>] ";
  }else {
   $subpagecss2str.="[首页] ";
   $subpagecss2str.="[上一页] ";
  }
 $a=$this->construct_num_page();
  for($i=0;$i<count($a);$i++){
   $s=$a[$i];
   if($s == $this->current_page ){
    $subpagecss2str.="[<span style='color:red;font-weight:bold;'>".$s."</span>]";
   }else{
    $url=$this->subpage_link.$s;
    $subpagecss2str.="[<a href='$url'>".$s."</a>]";
   }
  }
  if($this->current_page < $this->pagenums){
   $lastpageurl=$this->subpage_link.$this->pagenums;
   $nextpageurl=$this->subpage_link.($this->current_page+1);
   $subpagecss2str.=" [<a href='$nextpageurl'>下一页</a>] ";
   $subpagecss2str.="[<a href='$lastpageurl'>尾页</a>] ";
  }else {
   $subpagecss2str.="[下一页] ";
   $subpagecss2str.="[尾页] ";
  }
  return $subpagecss2str;
  }
}
//使用如下
/*include('../mysql.php');
//每页显示的条数
 $page_size=3;
//总条目数
$sql=mysql_query("select * from `stu_info`");
$nums=mysql_num_rows($sql);
//每次显示的页数
 $sub_pages=10;
//得到当前是第几页
 if(!isset($_get["p"])){
 $pagecurrent=1;
 }else{
  $pagecurrent=$_get["p"];
 }
 $subpages=new subpages($page_size,$nums,$pagecurrent,$sub_pages,"page.php?p=");
 $page=$subpages->subpagecss2();
 echo $page;//在此可以设置css样式
 $ss=mysql_query("select * from `stu_info` limit ".$page_size*($pagecurrent-1).",".$page_size);
 while($row=mysql_fetch_array($ss)){
 echo $row['stunum'].''.$row['stuname'].''.$row['clanum'].'<br>';
 }*/
?>