PHP获取URL字符串参数？

Question

在这里看了很多文章后，我没有找到解决办法，所以我需要帮助来做这个......我的网址是那些示例:

首页

https://mywebsite.com/
https://mywebsite.com/al/
https://mywebsite.com/it/
https://mywebsite.com/videos/
https://mywebsite.com/al/videos/
https://mywebsite.com/it/videos/
https://mywebsite.com/news/
https://mywebsite.com/al/news/
https://mywebsite.com/it/news/

查询

https://mywebsite.com/search/?q=YouTube
https://mywebsite.com/videos/search/?q=YouTube
https://mywebsite.com/news/search/?q=YouTube

https://mywebsite.com/al/search/?q=YouTube
https://mywebsite.com/al/videos/search/?q=YouTube
https://mywebsite.com/al/news/search/?q=YouTube

https://mywebsite.com/it/search/?q=YouTube
https://mywebsite.com/it/videos/search/?q=YouTube
https://mywebsite.com/it/news/search/?q=YouTube

我的 php & html 更改语言

<?php $Ava_Sulg = $_SERVER["REQUEST_URI"];?>

<a class="x" href="/<?php echo $Ava_Sulg;?>">EN</a>
<a class="x" href="/al<?php echo $Ava_Sulg;?>">AL</a>
<a class="x" href="/it<?php echo $Ava_Sulg;?>">IT</a>

所以我允许用户更改他们的语言，我想做的是，当他们更改语言时，url 可以是上述之一，例如，如果他们将语言从 AL 更改为 IT 和 url 是 https://mywebsite.com/al/videos/search/?q=YouTube 和 PHP 我想得到这个 https://mywebsite.com/it/videos/search/?q=YouTube 所以我只想从这个 url 更改(/al/到/it/)或从 IT to EN (/it/to Nothing) 但是我想改的是在中间，而且主页上不一样，对我来说很难，我怎么可以这样做吗？这可能吗？如果可能的话，我希望能在这里找到解决方案!非常感谢。

Answer 1

因为您只对操作路径 组件感兴趣，您可以简单地使用parse_url提取路径组件而不是正则表达式:

function generateurl($url, $lc) {
    $parts = parse_url($url);
    $parts['path'] = preg_replace('@^/[a-z][a-z]/@', '/', $parts['path']);
    if ($lc !== 'en') {
        $parts['path'] = '/' . $lc . $parts['path'];
    }
    $url = '';
    if (isset($parts['scheme'])) $url .= $parts['scheme'] . '://';
    if (isset($parts['host'])) $url .= $parts['host'];
    if (isset($parts['port'])) $url .= ':' . $parts['port'];
    if (isset($parts['path'])) $url .= $parts['path'];
    if (isset($parts['query'])) $url .= '?' . $parts['query'];
    if (isset($parts['fragment'])) $url .= '#' . $parts['fragment'];
    return $url;
}

如果你有http_build_url，上面的函数可以被简化功能可用。函数输入输出:

                           https://mywebsite.com/ + en = https://mywebsite.com/
                           https://mywebsite.com/ + al = https://mywebsite.com/al/
                           https://mywebsite.com/ + it = https://mywebsite.com/it/
                        https://mywebsite.com/al/ + en = https://mywebsite.com/
                        https://mywebsite.com/al/ + al = https://mywebsite.com/al/
                        https://mywebsite.com/al/ + it = https://mywebsite.com/it/

                    https://mywebsite.com/videos/ + en = https://mywebsite.com/videos/
                    https://mywebsite.com/videos/ + al = https://mywebsite.com/al/videos/
                    https://mywebsite.com/videos/ + it = https://mywebsite.com/it/videos/
                 https://mywebsite.com/al/videos/ + en = https://mywebsite.com/videos/
                 https://mywebsite.com/al/videos/ + al = https://mywebsite.com/al/videos/
                 https://mywebsite.com/al/videos/ + it = https://mywebsite.com/it/videos/

   https://mywebsite.com/videos/search/?q=YouTube + en = https://mywebsite.com/videos/search/?q=YouTube
   https://mywebsite.com/videos/search/?q=YouTube + al = https://mywebsite.com/al/videos/search/?q=YouTube
   https://mywebsite.com/videos/search/?q=YouTube + it = https://mywebsite.com/it/videos/search/?q=YouTube
https://mywebsite.com/al/videos/search/?q=YouTube + en = https://mywebsite.com/videos/search/?q=YouTube
https://mywebsite.com/al/videos/search/?q=YouTube + al = https://mywebsite.com/al/videos/search/?q=YouTube
https://mywebsite.com/al/videos/search/?q=YouTube + it = https://mywebsite.com/it/videos/search/?q=YouTube

                        /videos/search/?q=YouTube + en = /videos/search/?q=YouTube
                        /videos/search/?q=YouTube + al = /al/videos/search/?q=YouTube
                        /videos/search/?q=YouTube + it = /it/videos/search/?q=YouTube
                     /al/videos/search/?q=YouTube + en = /videos/search/?q=YouTube
                     /al/videos/search/?q=YouTube + al = /al/videos/search/?q=YouTube
                     /al/videos/search/?q=YouTube + it = /it/videos/search/?q=YouTube