JSON.stringify中的Unicode字符转换为真正的Unicode字符 [英] Unicode characters from JSON.stringify to real unicode characters

问题描述

我使用JSON.stringify()函数对用于发送到PHP的AJAX的JS对象进行字符串化.

I use JSON.stringify() function to stringify JS objects for AJAX sending to PHP.

当JSON.stringify函数将Unicode字符编码为\uxxxx格式(例如\u000a)时，就会出现问题.我的问题是如何在PHP中将这些字符转换为常规unicode字符?

The problem arises when JSON.stringify function encodes unicode characters to format \uxxxx (eg. \u000a). My question is how to convert those characters to regular unicode characters in PHP?

推荐答案

请参见这将转换为UTF-8:

This converts to UTF-8:

function unescape_utf16($string) {
    /* go for possible surrogate pairs first */
    $string = preg_replace_callback(
        '/\\\\u(D[89ab][0-9a-f]{2})\\\\u(D[c-f][0-9a-f]{2})/i',
        function ($matches) {
            $d = pack("H*", $matches[1].$matches[2]);
            return mb_convert_encoding($d, "UTF-8", "UTF-16BE");
        }, $string);
    /* now the rest */
    $string = preg_replace_callback('/\\\\u([0-9a-f]{4})/i',
        function ($matches) {
            $d = pack("H*", $matches[1]);
            return mb_convert_encoding($d, "UTF-8", "UTF-16BE");
        }, $string);
    return $string;
}

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