如何使用$url-8字符的%编码复制($filename，UTF)？

Question

这是怎么工作的？

copy("http://translate.google.com/translate_tts?tl=en&q=Love+Me", "/directory/loveme.mp3");

但这不是吗？

copy("http://translate.google.com/translate_tts?tl=hi&q=%26%232310%3B%26%232354%3B%26%232370%3B+%26%232327%3B%26%232379%3B%26%232349%3B%26%232368%3B",  "/directory/loveme.mp3");

如果我将两个URL都粘贴到浏览器中，它们都可以正常运行。但是第二个网址只复制了一个空白的mp3文件，而第一个网址复制了正确的MP3文件。

Answer 1

在调用copy之前，尝试在URL上执行此操作。

function utf8RawUrlDecode ($source) {
    $decodedStr = "";
    $pos = 0;
    $len = strlen ($source);
    while ($pos < $len) {
        $charAt = substr ($source, $pos, 1);
        if ($charAt == '%') {
            $pos++;
            $charAt = substr ($source, $pos, 1);
            if ($charAt == 'u') {
                // we got a unicode character
                $pos++;
                $unicodeHexVal = substr ($source, $pos, 4);
                $unicode = hexdec ($unicodeHexVal);
                $entity = "&#". $unicode . ';';
                $decodedStr .= utf8_encode ($entity);
                $pos += 4;
            }
            else {
                // we have an escaped ascii character
                $hexVal = substr ($source, $pos, 2);
                $decodedStr .= chr (hexdec ($hexVal));
                $pos += 2;
            }
        } else {
            $decodedStr .= $charAt;
            $pos++;
        }
    }
    return $decodedStr;
}

这是我从docs for rawurldecode上的评论中得到的--向下滚动。