php 中文字符截取函数
这是一款专业用来处理php 中文字符裁取函数哦，解决了中文字符截取会出现筹码的问题哦。
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;
}