如何获取和更改 URL 变量 PHP [英] How to get and change URL variable PHP

问题描述

谁能帮我解决这个问题我有一个像

Hi could anyone help me with this I have a URL like

parent/child/a=1&b=2$c=3

然后我有一个链接可以向该 URL 添加变量

then I have a link that would add variable to that URL

<a href="<?php echo $_SERVER["REQUEST_URI"]."&d=test1";?>">LINK 1</a>
<a href="<?php echo $_SERVER["REQUEST_URI"]."&d=test2";?>">LINK 2</a>

每次我点击链接时，指向 URL 的变量 d 都会像这样继续复制

every time I click my link the variable d to URL keep on reproducing like this

parent/child/a=1&b=2&c=3&d=test2&d=test2&d=test2&d=test1&d=test1

我知道 $_SERVER["REQUEST_URI"] 不断获取当前 URL，这就是我得到该结果的原因.我已经尝试了 $_SERVER[""] 的一些属性.我喜欢的是改变 d 变量值，不知道怎么做.非常感谢任何回复.谢谢！

I know that the $_SERVER["REQUEST_URI"] keep getting the current URL that is why I get that result. I have tried the some of properties of $_SERVER[""]. What I like is to change the d variable value, any idea how to do it. Any response is well appreciated.Thanks!

推荐答案

$query = $_GET;
// replace parameter(s)
$query['d'] = 'new_value';
// rebuild url
$query_result = http_build_query($query);
// new link
<a href="<?php echo $_SERVER['PHP_SELF']; ?>?<?php echo $query_result; ?>">Link</a>

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