/** * 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, EC_CHARSET); } elseif (function_exists('iconv_substr')) { $newstr = iconv_substr($str, 0, $length, EC_CHARSET); } else { //$newstr = trim_right(substr($str, 0, $length)); $newstr = substr($str, 0, $length); } if ($append && $str != $newstr) { $newstr .= '...'; } return $newstr; }
本文为原创内容,作者:闲鹤,原文链接:https://blog.uwenya.cc/543.html,转载请注明出处。