这里是SUYE的站点
| /** | |
| * 截取UTF-8编码下字符串的函数 | |
| * | |
| * @param string $str 被截取的字符串 | |
| * @param int $length 截取的长度 | |
| * @param bool $append 是否附加省略号 | |
| * | |
| * @return string | |
| */ | |
| function sub_str($str, $length = 0, $append = true) | |
| { | |
| $str = trim($str); | |
| $strlength = strlen($str); | |
| if ($length == 0 || $length >= $strlength) { | |
| return $str; | |
| } elseif ($length < 0) { | |
| $length = $strlength + $length; | |
| if ($length < 0) { | |
| $length = $strlength; | |
| } | |
| } | |
| if (function_exists('mb_substr')) { | |
| $newstr = mb_substr($str, 0, $length, 'utf-8'); | |
| } elseif (function_exists('iconv_substr')) { | |
| $newstr = iconv_substr($str, 0, $length, 'utf-8'); | |
| } else { | |
| $newstr = substr($str, 0, $length); | |
| } | |
| if ($append && $str != $newstr) { | |
| $newstr .= '...'; | |
| } | |
| return $newstr; | |
| } |
标签: php