“Â”字符出现而不是“ ”

Question

我发现 this thread which describes my issue pretty well and this 答案准确描述了我的问题。

The non-breaking space character is byte 0xA0 is ISO-8859-1; when encoded to UTF-8 it'd be 0xC2,0xA0, which, if you (incorrectly) view it as ISO-8859-1 comes out as "Â ". That includes a trailing nbsp...

但是，我已经设法将我的问题追溯到我用来将图像标签包装在 div 中的函数。

function img_format($str)
{
    $doc = new DOMDocument();
    @$doc->loadHTML($str);     // <-- Bonus points for the explaination of the @

    // $tags object
    $tags = $doc->getElementsByTagName('img');

    foreach ($tags as $tag) {

        $div = $doc->createElement('div');
        $div->setAttribute('class','inner-copy');
        $tag->parentNode->insertBefore($div, $tag);
        $div->appendChild($tag);

        $tag->setAttribute('class', 'inner-img');
    }

    $str = $doc->saveHTML();

    return $str;
}

很简单，我该如何解决这个函数中的这个问题？

我明白使用；

<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />

将解决这个问题，但显然我在函数本身中忽略了一些东西。

我试过了；

$dom->validateOnParse = true;

无济于事。（我不太清楚那是做什么的）

Answer 1

找到了！

@$doc->loadHTML(mb_convert_encoding($str, 'HTML-ENTITIES', 'UTF-8'));

This answer 解释了问题并给出了上述解决方法；

DOMDocument::loadHTML will treat your string as being in ISO-8859-1 unless you tell it otherwise. This results in UTF-8 strings being interpreted incorrectly.

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