PHP实现Unicode编码相互转换的方法示例

 <?php /** * $str 原始中文字符串 * $encoding 原始字符串的编码，默认utf-8 * $prefix 编码后的前缀，默认"&#" * $postfix 编码后的后缀，默认";" */ function unicode_encode($str, $encoding = 'utf-8', $prefix = '&#', $postfix = ';') { //将字符串拆分 $str = iconv("UTF-8", "gb2312", $str); $cind = 0; $arr_cont = array(); for ($i = 0; $i  0) { if (ord(substr($str, $cind, 1))  $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  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.gaodaima.com"; $unistr = unicode_encode($str); $unistr2 = unicode_decode($unistr); echo $unistr . '<br />'; echo $unistr2 . '<br />'; $unistr = unicode_encode($str,'GBK','\\u'); $unistr2 = unicode_deco<a style="color:transparent">来源gao*daima.com搞@代#码网</a>de($unistr,'GBK','\\u'); echo $unistr . '<br />'; echo $unistr2 . '<br />'; 

 function unicode_encode($name) {//Unicode编码 $jsonarr = array($name); $jsonstr = json_encode($jsonarr); if (empty ($jsonstr)) return ''; return substr($jsonstr,2,-2); } function unicode_decode($name) {//Unicode解码 $json = '{"str":"' . $name . '"}'; $arr = json_decode($json, true); if (empty ($arr)) return ''; return $arr['str']; } $test = "\u811a\u672c\u4e4b\u5bb6"; echo "unicode解码：".unicode_decode($test)."<br />"; echo "unicode编码：".unicode_encode('脚本之家')."<br />";