取字符串,php 截取中文字符串

php对中文的支持不怎么好哦，特别在我一个字符串中有中文与英语时截取就是个问题了，处理不好就会出现乱码了，下面我们这截取中文字符串函数就很好的处理了这件事情。

<script>ec(2);</script>

function MooCutstr($string, $length, $dot = ' ...') {
 global $charset;

 if(strlen($string)   return $string;
 }
 $string = str_replace(array('&', '"', '<', '>'), array('&', '"', ''), $string);
 $strcut = '';
 if(strtolower($charset) == 'utf-8') {
  $n = $tn = $noc = 0;
  while($n    $t = ord($string[$n]);
   if($t == 9 || $t == 10 || (32     $tn = 1; $n++; $noc++;
   } elseif (194     $tn = 2; $n += 2; $noc += 2;
   } elseif (224     $tn = 3; $n += 3; $noc += 2;
   } elseif (240     $tn = 4; $n += 4; $noc += 2;
   } elseif (248     $tn = 5; $n += 5; $noc += 2;
   } elseif ($t == 252 || $t == 253) {
    $tn = 6; $n += 6; $noc += 2;
   } else {
    $n++;
   }
   if($noc >= $length) {
    break;
   }
  }
  if($noc > $length) {
   $n -= $tn;
  }
  $strcut = substr($string, 0, $n);
 } else {
  for($i = 0; $i    $strcut .= ord($string[$i]) > 127 ? $string[$i].$string[++$i] : $string[$i];
  }
 }
 $strcut = str_replace(array('&', '"', ''), array('&', '"', '<', '>'), $strcut);

 return $strcut.$dot;
}