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

问题描述

 父/子/ a = 1& amp ; b = 2 $ c = 3 
  

然后我有一个链接将变量添加到该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> 
  

每次点击我的链接时，变量d到URL都会继续像这样重现。

 父母/子女/ a = 1& b = 2& c = 3& d = test2& d = test2& d = test2& d = test1& amp ; d = test1 
  

我知道$ _SERVER [REQUEST_URI]继续获取当前URL这就是我得到这个结果的原因。我已经尝试了$ _SERVER []的一些属性。
我喜欢的是改变d变量值，任何想法如何去做。
任何回应都非常感谢。谢谢！

解决方案

  $ query = $ _得到; 
 //替换参数
 $ query ['d'] ='new_value'; 
 //重建url 
 $ query_result = http_build_query（$ query）; 
 //新链接
< a href =<？php echo $ _SERVER ['PHP_SELF'];？>？<？php echo $ query_result;？>> Link< ; / A> 
  

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

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

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>

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

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!

解决方案

$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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