PHP实现Unicode编码相互转换的方法

 0) { if (ord(substr($str, $cind, 1)) < 0xA1) { //如果为英文则取1个字节 array_push($arr_cont, substr($str, $cind, 1)); $cind++; } else { array_push($arr_cont, substr($str, $cind, 2)); $cind+=2; } } } foreach ($arr_cont as &$row) { $row = iconv("gb2312", "UTF-8", $row); } //转换Unicode码 foreach ($arr_cont as $key => $value) { $unicodestr.= $prefix . base_convert(bin2hex(iconv('utf-8', 'UCS-4', $value)), 16, 10) .$postfix; } return $unicodestr; } /** * $str Unicode编码后的字符串 * $decoding 原始字符串的编码，默认utf-8 * $prefix 编码字符串的前缀，默认"" * $postfix 编码字符串的后缀，默认";" */ function unicode_decode($unistr, $encoding = 'utf-8', $prefix = '', $postfix = ';') { $arruni = explode($prefix, $unistr); $unistr = ''; for ($i = 1, $len = count($arruni); $i < $len; $i++) { if (strlen($postfix) > 0) { $arruni[$i] = substr($arruni[$i], 0, strlen($arruni[$i]) - strlen($postfix)); } $temp = intval($arruni[$i]); $unistr .= ($temp < 256) ? chr(0) . chr($temp) : chr($temp / 256) . chr($temp % 256); } return iconv('UCS-2', $encoding, $unistr); } $str = "PHP编程：www.jb51.net"; $unistr = unicode_encode($str); $unistr2 = unicode_decode($unistr); echo $unistr . '
'; echo $unistr2 . '
'; $unistr = unicode_encode($str,'GBK','\\u'); $unistr2 = unicode_decode($unistr,'GBK','\\u'); echo $unistr . '
'; echo $unistr2 . '
';