php实现读取超大文本并进行分页

<?php 
  session_start(); 
  if (empty($page)) {$page=1;}
  if (isset($_GET['page'])==TRUE) {$page=$_GET['page']; }
?> 
 
 
 
 
 
 

<?php 
if($page){ 
$counter=file_get_contents("keyword.txt"); //读取文本，填写你的文本
$length=strlen($counter); 
$page_count=ceil($length/5000); 
 
function msubstr($str,$start,$len){ 
  $strlength=$start+$len; 
  $tmpstr="";
  for($i=0;$i<$strlength;$i++) { 
  if(ord(substr($str,$i,1))==0x0a) {
    $tmpstr.='
';
  }
  if(ord(substr($str,$i,1))>0xa0) { 
    $tmpstr.=substr($str,$i,2); 
    $i++; 

  }
  else{ 
    $tmpstr.=substr($str,$i,1); 
	} 
  } 
  return $tmpstr; 
} 
//--------------------------截取中文字符串-------------------------- 
$c=msubstr($counter,0,($page-1)*5000); 
$c1=msubstr($counter,0,$page*5000); 
echo substr($c1,strlen($c),strlen($c1)-strlen($c)); 
}?> 

 
 
 
 <?php echo $page;?> / <?php echo $page_count;?> 页 
 


<?php
echo "首页 "; 
if($page!=1){ 
  echo "上一页 "; 
} 
if($page<$page_count){ 
  echo "下一页 "; 
}
echo "尾页"; 
?> 
 
 
 
 
 

　文章转自：http://www.kaotop.com/it/743386.html