将多字节字符串截断为n个字符

尝试这个：

function truncate($string, $chars = 50, $terminator = ' …') {    $cutPos = $chars - mb_strlen($terminator);    $boundaryPos = mb_strrpos(mb_substr($string, 0, mb_strpos($string, ' ', $cutPos)), ' ');    return mb_substr($string, 0, $boundaryPos === false ? $cutPos : $boundaryPos) . $terminator;}

但是您需要确保正确设置内部编码。