php自動識別文字編碼並轉換

/** * @ string 需要轉換的文字 * @ encoding 目標編碼 **/ function detect_encoding($string,$encoding = 'gbk'){ $is_utf8 = preg_match('%^(?:[\x09\x0a\x0d\x20-\x7e]| [\xc2-\xdf][\x80-\xbf]| \xe0[\xa0-\xbf][\x80-\xbf] | [\xe1-\xec\xee\xef][\x80-\xbf]{2} | \xed[\x80-\x9f][\x80-\xbf] | \xf0[\x90-\xbf][\x80-\xbf]{2} | [\xf1-\xf3][\x80-\xbf]{3} | \xf4[\x80-\x8f][\x80-\xbf]{2} )*$%xs', $string); if($is_utf8 && $encoding == 'utf8'){ return $string; }elseif($is_utf8){ return mb_convert_encoding($string, $encoding, "utf-8"); }else{ return mb_convert_encoding($string, $encoding, 'gbk,gb2312,big5'); } } 複製代碼

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