<?php

/**
 * Example presents error handling for getProblemTestcase() API method    
 */
use SphereEngine\Api\ProblemsClientV3;
use SphereEngine\Api\SphereEngineResponseException;
// require library
require_once '../../../autoload.php';
// define access parameters
$accessToken = '<access_token>';
$endpoint = '<endpoint>';
// initialization
$client = new ProblemsClientV3($accessToken, $endpoint);
// API usage
$problemCode = 'TEST';
$nonexistingTestcaseNumber = 999;
try {
    $response = $client->getProblemTestcase($problemCode, $nonexistingTestcaseNumber);
} catch (SphereEngineResponseException $e) {
    if ($e->getCode() == 401) {
        echo 'Invalid access token';
    } elseif ($e->getCode() == 403) {
        echo 'Access to the problem is forbidden';
    } elseif ($e->getCode() == 404) {
        // aggregates two possible reasons of 404 error
        // non existing problem or testcase
        echo 'Non existing resource (problem, testcase), details available in the message: ' . $e->getMessage();
    }
}
<?php

/**
 * Example presents usage of the successful getProblemTestcase() API method  
 */
use SphereEngine\Api\ProblemsClientV3;
// require library
require_once '../../../autoload.php';
// define access parameters
$accessToken = '<access_token>';
$endpoint = '<endpoint>';
// initialization
$client = new ProblemsClientV3($accessToken, $endpoint);
// API usage
$problemCode = 'TEST';
$testcaseNumber = 0;
$response = $client->getProblemTestcase($problemCode, $testcaseNumber);