Length of mixed strings in PHP calculations

Length of mixed strings in PHP calculations
Echo ccstrlen ($str), ' <hr> ';
Echo Ccstrleft ($STR, 3);
function Ccstrleft ($STR, $ Len) #从左边截取中英文混合字符串
{
$ascLen =strlen ($STR);   if ($ascLen <= $len) return $str;
$hasCC =ereg ("[ XA1-XFE] ", $STR); #同上
$hasAsc =ereg ("[x01-xa0]", $str);
if (! $hasCC) return substr ($str, 0, $len);
if (! $hasAsc)
if ($len & 0x01) #如果长度是奇数
return substr ($str, 0, $len + $len-2);
Else
return substr ($str, 0, $len + $len);
$cind = 0; $flag = 0;
while ($cind < $ascLen)
{
if (Ord (substr ($str, $cind, 1)) <0XA1) $flag + +;
$cind + +;
}
if ($flag & 0x01)
return substr ($str, 0, $len);
Else
return substr ($str, 0, $len-1);
}

Function Ccstrlen ($str) #计算中英文混合字符串的长度
{
$ccLen =0
$ascLen =strlen ($str);
$ind =0;
$hasCC =ereg (" [Xa1-xfe] ", $STR); #判断是否有汉字
$hasAsc =ereg ("[x01-xa0]", $str) #判断是否有ASCII字符
if ($hasCC &&! $hasAsc) #只有汉字的情况
Return strlen ($STR)/2;
if (! $hasCC && $hasAsc) #只有Ascii字符的情况
return strlen ($STR),
for ($ind =0; $ind < $ascLen; $ind + +)
{
if (ord ($str, $ind, 1) >0xa0)
{
$ccLen + +;
$ind + +;
}
Else
{
$ccLen + +;
}
}
return $ccLen;
}

Function cs ($str)  
{
    $ccLen = 0;
    $ascLen =strlen ($STR);
    $ind = 0;
    for ($ind =0 $ind < $ascLen; $ind + +)
    {
         if (substr ($str, $ind, 1) >0xa0)
        {
Ord             $ccLen + +;
            $ind + +;
       }
        Else
        {
             $ccLen + +;
       }
   }
    return $ccLen;
}