PHP實(shí)現(xiàn)的超長文本分頁顯示功能示例

?php if ($_GET['page']=="") {$_GET['page']=1;}; include("function.php");?>
html>
head>
meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
title>超長文本的分頁顯示/title>
/head>
style type="text/css">
!--
body {
 margin-left: 0px;
 margin-top: 0px;
 margin-right: 0px;
 margin-bottom: 0px;
}
a:link {
 text-decoration: none;
}
a:visited {
 text-decoration: none;
}
a:hover {
 text-decoration: none;
}
a:active {
 text-decoration: none;
}
.STYLE3 {color: #333333; font-size: 13px; }
-->
/style>
body>
 table width="876" height="638" border="0" align="center" cellpadding="0" cellspacing="0">
  tr>
  td width="343" height="159">nbsp;/td>
  td width="489">nbsp;/td>
  td width="44">nbsp;/td>
  /tr>
  tr>
  td height="245">nbsp;/td>
  td align="center" valign="top">table width="480" border="0" cellspacing="0" cellpadding="0">
  tr>
  td height="22" colspan="2">
   span class="STYLE3">
   ?php
//讀取超長文本中的數(shù)據(jù)，實(shí)現(xiàn)超長文本中數(shù)據(jù)的分頁顯示
 if($_GET['page']){
  $counter=file_get_contents("file/file.txt");
  $length=strlen($counter);
  $page_count=ceil($length/950);
  $c=msubstr($counter,0,($_GET['page']-1)*950);
  $c1=msubstr($counter,0,$_GET['page']*950);
  echo substr($c1,strlen($c),strlen($c1)-strlen($c));
 }
?>
   /span> /td>
  /tr>
  tr>
  td width="202" height="22">span class="STYLE3">頁次：?php echo $_GET['page'];?> / ?php echo $page_count;?> 頁 /span>/td>
  td width="278">span class="STYLE3">分頁：
   ?php
    if($_GET['page']!=1){
      echo "a href=index.php?page=1>首頁/a>nbsp;";
      echo "a href=index.php?page=".($_GET['page']-1).">上一頁/a>nbsp;";
     }
     if($_GET['page']$page_count){
      echo "a href=index.php?page=".($_GET['page']+1).">下一頁/a>nbsp;";
      echo "a href=index.php?page=".$page_count.">尾頁/a>";
     }
    ?>
  /span>/td>
  /tr>
/table>
/td>
  td>nbsp;/td>
  /tr>
  tr>
  td height="234">nbsp;/td>
  td>nbsp;/td>
  td>nbsp;/td>
  /tr>
/table>
/body>
/html>

?php
//定義一個用于截取一段字符串的函數(shù)msubstr()
 function msubstr($str,$start,$len){   //$str指的是字符串,$start指的是字符串的起始位置，$len指的是長度。
  $strlen=$start+$len;     //用$strlen存儲字符串的總長度（從字符串的起始位置到字符串的總長度）
  for($i=0;$i$strlen;$i++){    //通過for循環(huán)語句,循環(huán)讀取字符串
   if(ord(substr($str,$i,1))>0xa0){  //如果字符串中首個字節(jié)的ASCII序數(shù)值大于0xa0,則表示為漢字
    $tmpstr.=substr($str,$i,2);  //每次取出兩位字符賦給變量$tmpstr，即等于一個漢字
    $i++;       //變量自加1
   }else{        //如果不是漢字，則每次取出一位字符賦給變量$tmpstr
    $tmpstr.=substr($str,$i,1);
   }
  }
  return $tmpstr;       //輸出字符串
 }
?>