<?php

$url = 'https://api4.seranking.com/account/balance';

$contextOptions = [
    'http' => [
        'method' => 'GET',
        'ignore_errors' => true,
        'content' => '[]',
        'header' => [
            'Content-Type: application/json; charset=UTF-8'
        ]
    ],
    'ssl' => [
        'verify_peer' => false,
    ],
];

$context = stream_context_create($contextOptions);
$stream = fopen($url, 'rb', false, $context);
$responseContent = stream_get_contents($stream);
$responseHeaders = (array)$http_response_header;
fclose($stream);

var_dump($responseContent);