問題描述

只是為了記錄 - 我在這里的第一個問題，但希望不是我在社區中的最后一個輸入.但這不是我在這里的原因.

Just for the record - my first question here but hopefully not my last input in the community. But that's not why I'm here.

我目前正在開發一個簡單的系統，該系統必須生成帶有文本的圖像.一切都很順利，直到我意識到 GD 無法處理像

I'm currently developing a simple system that has to generate an image with a text on it. Everthing went well until I realised that GD cannot handle UTF-8 characters like

ā, ?, ?, ?, ?, é

ā, ?, ?, ?, ?, é

等等.

為了解決問題 - 我正在使用 imagettftext()

為了解決我的問題，我深入谷歌搜索并返回了一些解決方案，但遺憾的是，沒有一個解決方案完全解決了我的問題.目前我正在使用我在這個線程中找到的這個腳本 - PHP 函數 imagettftext() 和 unicode

Trying to solve my problem I dug into depths of google and some solutions were returned, none of them, sadly, solved my problem completely. Currently I'm using this script I found in this thread - PHP function imagettftext() and unicode

private function properText($text){

    // Convert UTF-8 string to HTML entities
    $text = mb_convert_encoding($text, 'HTML-ENTITIES',"UTF-8");
    // Convert HTML entities into ISO-8859-1
    $text = html_entity_decode($text,ENT_NOQUOTES, "ISO-8859-1");
    // Convert characters > 127 into their hexidecimal equivalents
    $out = "";
    for($i = 0; $i < strlen($text); $i++) {
        $letter = $text[$i];
        $num = ord($letter);
        if($num>127) {
          $out .= "&#$num;";
        } else {
          $out .=  $letter;
        }
    }

    return $out;

}

它適用于某些字符，但不是所有字符，例如，帶有變音符號的轉換不正確.

and it works fine for some characters but not all of them, for example, a with umlaut isn't converted correctly.

所以在這一點上，我不知道去哪里尋找什么，因為我無法預測用戶輸入.更準確地說，系統從 xml 提要中提取藝術家姓名并使用數據生成圖像(我不打算支持象形文字).

So at this point I'm not sure where and what to look for anymore as I cannot predict the user input. To be more precise, the system is pulling artist names from an xml feed and using the data for the image generation (I'm not planning to support hieroglyphs).

我使用 PHP 的 mb_detect_encoding() 并且我確保當前未正確顯示的所有字符都包含在我提供給 imagettftext()<的字體文件中/em>使用 windows charmap 工具檢查它的功能.

José González -> 4a6f73c3a920476f6e7ac3a16c657a
// input -> bin2hex(input)

$text = mb_convert_encoding($text, "HTML-ENTITIES", "UTF-8");
$text = preg_replace('~^(&([a-zA-Z0-9]);)~',htmlentities('${1}'),$text);
return($text); 

private function properText($text){
    $text = mb_convert_encoding($text, "HTML-ENTITIES", "UTF-8");
    $text = preg_replace('~^(&([a-zA-Z0-9]);)~',htmlentities('${1}'),$text);
    return($text); 
}