咳嗽di小鱼

<?php
function sysSubStr($String,$Length,$Append = false)
{
if (strlen($String) < = $Length )
{
       return $String;
}
else
{
       $I = 0;
       while ($I < $Length)
       {
         $StringTMP = substr($String,$I,1);
         if ( ord($StringTMP) >=224 )
         {
            $StringTMP = substr($String,$I,3);
            $I = $I + 3;
         }
         elseif( ord($StringTMP) >=192 )
         {
            $StringTMP = substr($String,$I,2);
            $I = $I + 2;
         }
         else
         {
            $I = $I + 1;
         }
         $StringLast[] = $StringTMP;
       }
       $StringLast = implode("",$StringLast);
       if($Append)
       {
         $StringLast .= "...";
       }
       return $StringLast;
}
}
$String = "whatever you want";
$Length = "10";
$Append = false;
echo sysSubStr($String,$Length,$Append);
?>