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Homephp教程php手册fgetss的BUG及纠正


/*
作者:朱江 zhu_jiang@263.net
毕业于北京工业大学
工作嘛,呵呵,不说也罢,那是一个并不让我引以为荣的地方

php4.X的系统所提供的fgetss()功能不完善,不能滤干净HTML TAG,分析
其中忽略了某些情况,以下代码是本人在开发过程中自制的土炮。

关于fgetss的BUG,可用如下代码研究一下:
$fp=fopen("index.html","r");
while (! feof($fp))
{
$ms=fgetss($fp);
printf($ms);
}
fclose($fp);

版杈 :免费
*/
function mygets($myFile)
{
//while(!feof($myFile))
//{
$myline = fgets($myFile, 255);

$big=strlen(strstr($myline,">"));
$small=strlen(strstr($myline,"if($big>$small) //此句很重要,如果HTML代码中间有换行时有用
{ //如果一行中首先出现的是>而不是$myline=strstr($myline,">");
$myline=substr($myline,1);
}

$len=strlen($myline);
$startskip=false;
$outstring=""; //important!

for($i=1;$i{
$a=substr($myline,$i-1,1);
switch($a)
{
case "$startskip=true;


//$myline=substr($myline,">");
//$myline=strstr($myline,1);
break;
case ">":
//$myline=substr($myline,1);
$startskip=false;
break;
default:
}
if(!$startskip && $a!=">") $outstring=$outstring.$a;
}
$outstring=str_replace(" "," ",$outstring);
//当然,以&开头的东东如果不想要可以再加,如法炮制,这里只是过滤 
$outstring=str_replace(" ","",$outstring);
$outstring=str_replace(" ","",$outstring); //双引号内为全角空格
$outstring=str_replace(" ","",$outstring);
return $outstring;
//}
} ?>
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