截圖多餘字元，中英文，避免截取中文亂碼

多餘字元，中英文都可以，避免截取中文結尾 ？？ 亂碼！！ function utf8_strlen($string = null) { // 將字串分解為單元 preg_match_all('/./us', $string, $match); // 返回單元個數 return count($match[0]); } function sub_content($content, $length){ $len = utf8_strlen($content); for($i = 0 ; $i < $len ; $i++){ $arr[$i] = mb_substr($content,$i,1,'utf-8'); } $get_length = 0; $result = ''; foreach($arr as $code){ $result .= $code; if(strlen($code) > 1){ $get_length += 2; }else{ $get_length += 1; } if($get_length >= $length){ break; } } return $result; } echo sub_content($rows["Description"],18); /** * 字串截取，支援中文和其他編碼 * @param string $str * @param int $start * @param int $length * @param string $charset * @param boolean $suffix * @return string */ function w_substr($str, $start = 0, $length, $charset = "utf-8", $suffix = TRUE) { $suffix_str = $suffix ? '…' : ''; if(function_exists('mb_substr')) { return mb_substr($str, $start, $length, $charset) . $suffix_str; } elseif(function_exists('iconv_substr')) { return iconv_substr($str, $start, $length, $charset) . $suffix_str; } else { $pattern = array(); $pattern['utf-8'] = '/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xff][\x80-\xbf]{3}/'; $pattern['gb2312'] = '/[\x01-\x7f]|[\xb0-\xf7][\xa0-\xfe]/'; $pattern['gbk'] = '/[\x01-\x7f]|[\x81-\xfe][\x40-\xfe]/'; $pattern['big5'] = '/[\x01-\x7f]|[\x81-\xfe]([\x40-\x7e]|\xa1-\xfe])/'; preg_match_all($pattern[$charset], $str, $matches); $slice = implode("", array_slice($matches[0], $start, $length)); return $slice . $suffix_str; } } 複製代碼

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