PHP Use Keyword Namespace Not Finding Class - php

Question

Weirdness. Any ideas why it can't find the class?
Directory Tree:
test2.php
- src
- Google
- Spreadsheet
DefaultServiceRequest.php
ServiceRequestInterface.php
Google_Client.php
...
test2.php:
namespace src\Google\Spreadsheet;
require_once 'src/Google/Spreadsheet/ServiceRequestInterface.php';
require_once 'src/Google/Spreadsheet/DefaultServiceRequest.php';
require_once 'src/Google/Spreadsheet/Google_Client.php';
use Google\Spreadsheet\ServiceRequestInterface;
use Google\Spreadsheet\DefaultServiceRequest;
use Google\Spreadsheet\ServiceRequestFactory;
function getGoogleTokenFromKeyFile($clientId, $clientEmail, $pathToP12File) {
require 'src/Google/Spreadsheet/Google_Client.php';
$client = new Google_Client();
$client->setClientId($clientId);
$cred = new Google_Auth_AssertionCredentials(
$clientEmail,
array('https://spreadsheets.google.com/feeds'),
file_get_contents($pathToP12File)
);
$client->setAssertionCredentials($cred);
if ($client->getAuth()->isAccessTokenExpired()) {
$client->getAuth()->refreshTokenWithAssertion($cred);
}
$service_token = json_decode($client->getAccessToken());
return $service_token->access_token;
}
$serviceRequest = new DefaultServiceRequest(getGoogleTokenFromKeyFile(..., ..., ...));
ServiceRequestFactory::setInstance($serviceRequest);
Not sure if this is Google API related or what. Something weird is the ServiceRequest classes wouldn't work until I required them. When I didn't, it said it couldn't find it... And when I tried adding src/ to the use path, didn't work, and I tried removing the path all together, all did nothing.
Error: Fatal error: Class 'src\Google\Spreadsheet\Google_Client' not found in test2.php on line 15

Answer 1

looks like you are using this library
if you used composer to install the library you need to include the vendor/autoload.php file in your code
require 'vendor/autoload.php';
it is recomneded that you use composer to install this library but if you don't want to use composer, you need to create autoloader and require it in your code