<?php/*** $str 原始中文字串* $encoding 原始字串的編碼,預設utf-8* $prefix 編碼後的首碼,預設"&#"* $postfix 編碼後的尾碼,預設";"*/function unicode_encode($str, $encoding = 'utf-8', $prefix = '&#', $postfix = ';') { //將字串拆分 $str = iconv("UTF-8", "gb2312", $str); $cind = 0; $arr_cont = array(); for ($i = 0; $i < strlen($str); $i++) { if (strlen(substr($str, $cind, 1)) > 0) { if (ord(substr($str, $cind, 1)) < 0xA1) { //如果為英文則取1個位元組 array_push($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", $row); } //轉換Unicode碼 foreach ($arr_cont as $key => $value) { $unicodestr.= $prefix . base_convert(bin2hex(iconv('utf-8', 'UCS-4', $value)), 16, 10) .$postfix; } return $unicodestr;}/*** $str Unicode編碼後的字串* $decoding 原始字串的編碼,預設utf-8* $prefix 編碼字串的首碼,預設"&#"* $postfix 編碼字串的尾碼,預設";"*/function unicode_decode($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二次開發:www.php2.cc";$unistr = unicode_encode($str);$unistr2 = unicode_decode($unistr);echo $unistr . '<br />';echo $unistr2 . '<br />';$unistr = unicode_encode($str,'GBK','\\u');$unistr2 = unicode_decode($unistr,'GBK','\\u');echo $unistr . '<br />';echo $unistr2 . '<br />';