PHP class not found when using class in another class - php

Question

I have 2 class in Two sub folders within a mother folder in am trying to auto load classes within index.php file and then use one into another one but not working yet.Take a look at this->
FOLDER STRUCTURE
MotherFOlder
|- lib
| |- Api.php
|- inc
| | - SC.php
|- index.php
in index.php i am coding like this:
namespace ACX;
use ACX\lib\Api;
use ACX\inc\SC;
spl_autoload_register(__NAMESPACE__ . '\\autoload');
function autoload($class = '') {
if (!strstr($class, 'ACX')) {
return;
}
$result = str_replace('ACX\\', '', $class);
$result = str_replace('\\', '/', $result);
require $result . '.php';
}
Then in Api.php
<?php
namespace ACX\lib;
class Api{
private static $instance = null;
public static function getDataJSON(){
return 'data';
}
public static function getInstance(){
if (empty(self::$instance)) {
self::$instance = new self();
}
return self::$instance;
}
}
And in SC.php
<?php
namespace ACX\inc;
class SC{
private static $instance = null;
public static function getDataSets(){
$data = Api::getDataJSON();
return $data;
}
public static function getInstance(){
if (empty(self::$instance)) {
self::$instance = new self();
}
return self::$instance;
}
}
But i am getting this error Fatal error: require(): Failed opening required 'inc/Api.php'
Is there any bug in the code?

Answer 1

It's simple because you forgot to import Api.php class inside SC.php class where you call Api::getDataJSON(). As Api.php is under this ACX\lib namespace, import it as below:
<?php
namespace ACX\inc;
use ACX\lib\Api; // This needs to be imported
class SC {
// other code
public static function getDataSets(){
$data = Api::getDataJSON(); // You're calling Api.php class here
return $data;
}
// other code
}