PHP's $_SERVER: QUERY_STRING : <p>on <a href="http://php.net/manual/en/reserved.variables.server.php" rel="nofollow">http://php.net/manual/en/reserved.variables.server.php</a>, it says</p>

<p>"
'QUERY_STRING'
The query string, if any, via which the page was accessed.
"</p>

<p>I've been having trouble comprehending that. As I understand it, the query string is simply there as input to the page. The script which the URL addresses uses the query string to do its work and generate whatever appropriate response it is designed to do. </p>

<p>I could understand, however, how that response (i.e. the webpage the script sends back) is said to be gotten via the query string, since the values in the query string were used to formulate it.. , but not the initial script that processed it. </p>

<p>It's a semantics issue.. appreciate your explanations.</p>
