如何在php中定义$ _GET内的变量

Question

<?php $var = "sub"; echo $_GET['{$var}']; ?>

i want this working when i called mydomain.com?sub=hii . is there any other way to make this work? I want to use random $var value from my database.

Answer 1

In a cakePHP environment the url usually is

http://domain/controller/action?sub=hii

Why not just using the framework as it is intended to be used - and as its documented: http://book.cakephp.org/2.0/en/controllers/request-response.html#accessing-querystring-parameters

$sub = $this->request->query('sub');

echo $sub // prints "hii"

Assuming you are using a current version of CakePHP. Please always mention the version you are working with to get correct and appropriate answers!