php字符串转Unicode编码, Unicode编码转php字符

百度了很多,都一样, 要么不对, 要不就是只是把字符串的汉字转Unicode

经过多次试验查找, 找到了如下方法,

注意:字符串编码必须是utf-8,如果不是自行用icon转一下

//字符串转Unicode编码function unicode_encode($strLong) { $strArr = preg_split('/(?<!^)(?!$)/u', $strLong);//拆分字符串为数组(含中文字符) $resUnicode = ''; foreach ($strArr as $str) { $bin_str = ''; $arr = is_array($str) ? $str : str_split($str);//获取字符内部数组表示,此时$arr应类似array(228, 189, 160) foreach ($arr as $value) { $bin_str .= decbin(ord($value));//转成数字再转成二进制字符串,$bin_str应类似111001001011110110100000,如果是汉字"你" } $bin_str = preg_replace('/^.{4}(.{4}).{2}(.{6}).{2}(.{6})$/', '$1$2$3', $bin_str);//正则截取, $bin_str应类似0100111101100000,如果是汉字"你" $unicode = dechex(bindec($bin_str));//返回unicode十六进制 $_sup = ''; for ($i = 0; $i < 4 - strlen($unicode); $i++) { $_sup .= '0';//补位高字节 0 } $str = '\\u' . $_sup . $unicode; //加上 \u 返回 $resUnicode .= $str; } return $resUnicode;}//Unicode编码转字符串方法1function unicode_decode($name){ // 转换编码，将Unicode编码转换成可以浏览的utf-8编码 $pattern = '/([\w]+)|(\\\u([\w]{4}))/i'; preg_match_all($pattern, $name, $matches); if (!empty($matches)) { $name = ''; for ($j = 0; $j < count($matches[0]); $j++) { $str = $matches[0][$j]; if (strpos($str, '\\u') === 0) { $code = base_convert(substr($str, 2, 2), 16, 10); $code2 = base_convert(substr($str, 4), 16, 10); $c = chr($code).chr($code2); $c = iconv('UCS-2', 'UTF-8', $c); $name .= $c; } else { $name .= $str; } } } return $name;}//Unicode编码转字符串function unicode_decode2($str){ $json = '{"str":"' . $str . '"}'; $arr = json_decode($json, true); if (empty($arr)) return ''; return $arr['str'];}echo unicode_encode('若水小站:qq963087326'),'<br>';//结果\u82e5\u6c34\u5c0f\u7ad9\u003a\u0071\u0071\u0039\u0036\u0033\u0030\u0038\u0037\u0033\u0032\u0036echo unicode_decode('\u82e5\u6c34\u5c0f\u7ad9\u003a\u0071\u0071\u0039\u0036\u0033\u0030\u0038\u0037\u0033\u0032\u0036');//结果若水小站:qq963087326

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