title: PHP a param exists in URL but not in $_GET array?
body: <p>I am facing this (I don't know what to call this) situation I have a URL like</p>
  <pre><code>site.com/?tag=value&amp;other=1&amp;more=2
  </code></pre>
  <p>the problem is that when i</p>
  <pre><code>var_dump($_GET);
  // prints
  array( 'other' =&gt; '1', 'more' =&gt; '2');
  </code></pre>
  <p>for some reason the parameter <strong>tag</strong> is missing from $_GET array.</p>
  <p>any ideas? the server request_uri is</p>
  <pre><code>'REQUEST_URI' =&gt; string '/site-com/?other=1&amp;more=2'
  </code></pre>
  <p>its even missing in $_SERVER['REQUEST_URI'] and the server is</p>
  <pre><code>Linux 4.4.216-1.el6.elrepo.x86_64 x86_64
  PHP 7.3
   
  </code></pre>
  <p>Thanks</p>