PHP中一个中文字符串截取函数

function cnSubStr($string,$sublen)
{
if($sublen>=strlen($string))
{
return $string;
}
$s="";
for($i=0;$i {
if(ord($string{$i})>127)
{
$s.=$string{$i}.$string{ $i};
continue;
}else{
$s.=$string{$i};
continue;
}
}
return $s;
}// End Function cnSubStr($string,$sublen)

/////////// Use like this :

echo "

__________________________

";
$string="242432反对感是456犯得上广泛大使馆地方7890";
$sublen=strlen($string);
$len=20;
echo $string."

";
echo "总长为：".($sublen 1)."

";
echo "截取数：".$len."

";

for($i=1;$i if($i>$len){
echo $i." → ".cnSubStr($string,$i)."…
";
continue;
}
echo $i." → ".cnSubStr($string,$i)."
";
}

?>