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HomeBackend DevelopmentPHP Tutorialphp 实现emoji遇到的棘手问题,很棘手!

<code>function str_emoji($dir,$str){
  if($dir){
    $str=json_encode($str);
    $str=preg_replace('#(\\\ud[0-9a-f]{3}|\\\u2(6|7)[0-9a-f]{2})#ie','addslashes("\\1")',$str);
    //emoji 5.0后,一个表情由两个字符组成
    $str=json_decode($str);
  }else{
    $str=preg_replace('#(u[0-9a-f]{4}u[0-9a-f]{4})#ie','iconv("UCS-2","UTF-8",pack("H4","\\1"))',$str);
    //此正则匹配ue415ue415形式的数据
    //不能将二进制转成\xf0\x9f\x98\x83形式的UTF-8
  }
  return $str;
};</code>
<code>//写进数据库
$content=str_emoji(true,$content);</code>
<code>//读取数据库
$content=str_emoji(false,$content);</code>

下面问题来了。

iconv("UCS-2","UTF-8",pack("H4","\\1")) 不能将二进制专程UTF-8,怎么破????
另:数据库版本不能直接存储emoji,升级数据库是肯定不可行的方案。

参考文章:http://blog.mc-zone.me/article/322

回复内容:

<code>function str_emoji($dir,$str){
  if($dir){
    $str=json_encode($str);
    $str=preg_replace('#(\\\ud[0-9a-f]{3}|\\\u2(6|7)[0-9a-f]{2})#ie','addslashes("\\1")',$str);
    //emoji 5.0后,一个表情由两个字符组成
    $str=json_decode($str);
  }else{
    $str=preg_replace('#(u[0-9a-f]{4}u[0-9a-f]{4})#ie','iconv("UCS-2","UTF-8",pack("H4","\\1"))',$str);
    //此正则匹配ue415ue415形式的数据
    //不能将二进制转成\xf0\x9f\x98\x83形式的UTF-8
  }
  return $str;
};</code>
<code>//写进数据库
$content=str_emoji(true,$content);</code>
<code>//读取数据库
$content=str_emoji(false,$content);</code>

下面问题来了。

iconv("UCS-2","UTF-8",pack("H4","\\1")) 不能将二进制专程UTF-8,怎么破????
另:数据库版本不能直接存储emoji,升级数据库是肯定不可行的方案。

参考文章:http://blog.mc-zone.me/article/322

存数据库的时候 base_encode64() 取得的时候base_decode64()

mysql编码选择utf8mb4即可

数据库是mysql吧,把数据库和字段编码设置为utf8mb4,可以直接保存表情字符

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