Can't access property from outside function PHP? - php

Question

I am trying to access a property outside of a function in PHP, but it is not working?
<?php
class Bootstrap {
private $_url = null;
public function init() {
$this->_loadController();
}
public function getUrl() {
$url = (isset($_GET['url'])) ? $_GET['url'] : null;
$this->_url = explode('/', $_GET['url']);
}
public function _loadController() {
echo $this->_url[0];
}
}
If I echo $this->_url[0] in the method getUrl and then call it from my index page, I get the URL. While if I call it from the _loadController method, I just get a blank page. I did var_dump($this->_url) and got NULL.
My code in my index page is follows
<?php
include 'bootstrap.php';
$bootstrap = new Bootstrap();
$app = $bootstrap->init();
?>
Could someone help me out? Thanks!

Answer 1

You have the problem because, you did not call getUrl(), but in this method you set valueinto $_url. Change you code to this:
class Bootstrap {
private $_url = null;
public function init() {
$this->_loadController();
}
public function getUrl() {
$url = (isset($_GET['url'])) ? $_GET['url'] : null;
$this->_url = explode('/', $_GET['url']);
}
public function _loadController() {
$this-> getUrl(); // here you call getUrl()
echo $this->_url[0];
}
}
Or, you can use magic mathod to set the url into, here:
class Bootstrap {
private $_url = null;
public function init() {
$this->_loadController();
}
public function __construct() {
$url = (isset($_GET['url'])) ? $_GET['url'] : null;
$this->_url = explode('/', $_GET['url']);
}
public function _loadController() {
echo $this->_url[0];
}
}