PHP 长文章分页函数

{
global $expert_id;
$PageLength = 2000; //每页字数
$CLength = strlen($content);
$PageCount = floor(($CLength / $PageLength)) + 1; //计算页数
$PageArray=array();
$Seperator = array("n","r","。","！","？","；","，","”","'"); //分隔符号
//echo "页数：".$PageCount."
";
//echo "长度：".$CLength."


";
//strpos() 函数返回字符串在另一个字符串中第一次出现的位置
if($CLength {
echo $content;
}else{
$PageArray[0]=0;
$Pos = 0;
$i=0;
//第一页
for($j=0;$j {
//echo $Seperator[$j];
$Pos=strpos($content,$Seperator[$j],$PageArray[$i]+1900);
while($Pos > 0 && $Pos $i*$PageLength )
{
$PageArray[$i] = $Pos ;
$Pos = strpos($Pos+$PageLength,$content,$Seperator[$j]) ;
}
if($PageArray[$i]>0)
{
$j = $j + sizeof($Seperator) + 1;
}
}
//---
for($i=1;$i for($j=0;$j {
//echo $Seperator[$j];
$Pos=strpos($content,$Seperator[$j],$PageArray[$i-1]+1900);
while($Pos > 0 && $Pos $i*$PageLength )
{
$PageArray[$i] = $Pos ;
$Pos = strpos($Pos+$PageLength,$content,$Seperator[$j]) ;
}
if($PageArray[$i]>0)
{
$j = $j + sizeof($Seperator) + 1;
}
}
}

//--最后一页
$PageArray[$PageCount-1]=$CLength;
//$page=2;
if($page==1)
{
$output=substr($content,0,$PageArray[$page-1]+2);
}
if($page>1 && $page {
$output=substr($content,$PageArray[$page-2]+2,$PageArray[$page-1]-$PageArray[$page-2]);
$output=" （上接第".($page-1)."页）n".$output;
}
echo str_replace("n","
",$output);
//if($page==$PageCount)
//return $output=substr($content,$PageArray[$page-2]+2,$PageArray[$page-1]-$PageArray[$page-2]);
if($PageCount>1)
{
echo "

";
echo "".$page."/".$PageCount." 页 ";
if($page>1)
echo "上一页 ";
else
echo "上一页 ";
for($i=1;$i {
echo "[".$i."] ";
}
if($page echo " 下一页 ";
else
echo " 下一页 ";
echo "";
}
}
}?>

$content1=''测试文字，尽量长一些，www.111cn.net";
$current=$_REQUEST['page_t'];
$result=ff_page($content1,$current);
echo $result;
?>