如何使用PHP抓取URL参数?

2022-01-04 00:00:00 get php superglobals

我试图获取每个 URL 参数并从头到尾显示它们，但我希望能够在页面上的任何位置显示任何参数.我怎样才能做到这一点?我必须在我的脚本上添加或修改什么?

I'm trying to grab each URL parameter and display them from first to last, but I want to be able to display any of the parameters anywhere on the page. How can I do this? What do I have to add or modify on my script?

这是一个 URL 值示例.

Here is an example of a URL value.

http://www.localhost.com/topics/index.php?cat=3&sub1=sub-1&sub2=sub-2&sub3=sub-3&sub4=sub-4

这是我的 PHP 脚本.

Here is my PHP script.

$url = $_SERVER['QUERY_STRING'];
$query = array();

if(!empty($url)){
  foreach(explode('&', $url) as $part){
    list($key, $value) = explode('=', $part, 2);
    $query[$key] = $value;
  }
}

推荐答案

您不需要手动执行此操作，PHP 已经在 $_GET 全局变量中提供了此功能:

You don't need to do that manually, PHP already provides this functionality in the $_GET global variable:

<?php
    foreach($_GET as $key => $value)
        echo $key . " : " . $value;
?>

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