从HTML中的Twitter呈现Twitter表情符号的最佳方法? [英] Best way to render Twitter emojis from twitter in html?

问题描述

所以我有来自twitter api查询的json对象.原始形式的文本是这样的:

So I have the json object from a query of the twitter api. In it's raw form, the text is like this:

"check out this emoji \ud83d\udc98"

我花了很多时间阅读有关unicode及其格式的信息，并且我管理了一个以json unicode作为键的库，如下所示:

I've spent a lot of time reading about unicode and it's formats, and I've managed a library that has the json unicode as the keys like this:

$emoji_dictionary = array(
  '\ud83d\udd39'=> array(
    'emoji-id'=> 'e-B76', 
    'codepoint'=> 'U+1F539', 
    'name'=> 'SMALL BLUE DIAMOND', 
    'twitter-id'=> '1f539'
  ), 
  '\ud83d\ude3f'=> array(
    'emoji-id'=> 'e-34D', 
    'codepoint'=> 'U+1F63F', 
    'name'=> 'CRYING CAT FACE', 
    'twitter-id'=> '1f63f'
  ), 

  ...
);

因此，现在我一直在像地狱一样尝试评估从twitter获得的json unicode作为字符串，然后可以将其放入该函数:

So now I've been trying like hell to evaluate the json unicode that I got from twitter as a string, which I can then throw in to this function:

function get_src($str) {
    echo 'regex found:' . $str . '<br />';
    return '<img class="twitter-emoji" src="https://abs.twimg.com/emoji/v1/72x72/' . $emoji_dictionary[$str]['twitter-id'] . '.png"/>';
  }

哪个从Twitter返回该表情符号的图像，但是我似乎无法在PHP中正确地preg_replace json数据.有时会出现此错误:

Which returns an image from twitter of that emoji, but I can't seem to preg_replace the json data properly in PHP. I get this error sometimes:

preg_replace(): Compilation failed: PCRE does not support \L, \l, \N{name}, \U, or \u

我的preg_replace就像这样(请注意，这是行不通的):

My preg_replace is like this (note that this does not work):

  $text = strval(json_encode($twitter_datum->text));
  $pattern = "/\\\\u([a-f0-9]{4})/e";
  $text = preg_replace($pattern, "get_src($1)", $text;

此模式分别捕获'd83d'和'dc98'.

This pattern grabs 'd83d' and 'dc98' separately.

我要做什么是不可能的?我只想从"check out this emoji!! \ud83d\udc98"

Is what I'm trying to do impossible? I just want to get 1f498 (from the dictionary) from "check out this emoji!! \ud83d\udc98"

推荐答案

对于任何尝试做这种事情的人，这是我所学到的:

To anyone trying to do something like this, here's what I've learned:

对json_encodeed进行字符串操作是一个坏主意.我这样做是因为我看不到unicode表达式，而是看到了小框&因此，不知道如何评估它们.

String operations on something json_encodeed is a bad idea. I was doing this because I couldn't see the unicode expression but little boxes instead & thus and didn't know how to evaluate them.

PHP的表情符号是此类资源的绝佳资源.它可以用<span class="xxx'></span>交换任何出现的Unicode表情符号，其中xxx映射到该表情符号的子图形.它所做的事情与我尝试做的事情类似，但是有两个主要区别:

Emoji for PHP is a GREAT resource for this sort of thing. It can swap out any unicode emoji occurrence with <span class="xxx'></span>, where the xxx maps to a sprite of that emoji. It does something similar to what I was trying to do, but for two main differences:

• 代码的正则表达式位于json_decoded实体上
• 与其将src替换为Twitter的src而不是将其替换为<img>，而是参考本地png转到<span>

• The code's regex is on the json_decoded entity
• Rather than replacing it with an <img> with an src going to twitter, this goes to <span> with reference to a local png

我的代码现在看起来像这样，并且工作正常.唯一的问题是，如果/当添加了新表情符号时，此脚本将无法识别它们.也许到那时，表情符号会更加通用，带有完整的浏览器支持，等等.这就是我所拥有的: $ json

My code now looks like this, and it is working fine. The only issue is if/when new emojis are added, they will not be recognized by this script. Maybe at that point emojis will be a little more universal, w/ full browser support, etc. Here's what I have: $json

function twitter_chron() {
  $json = get_tweets(50);
  $twitter_data = json_decode($json); 
  include(ABSPATH . 'wp-content/themes/custom/emoji/emoji.php');

    foreach($twitter_data as $twitter_datum) {
        $id = $twitter_datum->id;
        if (property_exists($twitter_datum, 'retweeted_status')) {
          $text = 'RT: ' . $twitter_datum->retweeted_status->text;
        } else {
          $text = $twitter_datum->text;
        }
        $text = emoji_unified_to_html($text);
        $text = iconv("UTF-8", "ASCII//IGNORE", $text);
        insert_tweet($id, $text, $date);
    } 
}

emoji_unified_to_html($text)来自emoji.php.我还有针对推文正文运行的其他功能，用于链接，主题标签&提到了，但我认为这与特定的表情符号无关.

The emoji_unified_to_html($text) is from the emoji.php. I have additional functions that I run against the tweet body for links, hashtags & mentions but I figure it's not relevant to this particular issue of emojis.

希望这对某人有帮助.

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