Simple REST API abstraction

SimpleApi.php

<?php

class SimpleApi
{
    private $baseUrl;

    public function __construct($baseUrl)
    {
        $this->baseUrl = $baseUrl;
    }

    public function call($method, $path, array $params = [])
    {
        $handler = curl_init();
        $url = $this->baseUrl . $path;
        $headers = [
            'Content-Type: application/json',
        ];

        if ($method === 'GET' && count($params) > 0) {
            $query = http_build_query($params);

            if (strpos($url, '?') === false) {
                $url .= '?' . $query;
            } else {
                $url .= '&' . $query;
            }
        }

        curl_setopt($handler, CURLOPT_URL, $url);
        curl_setopt($handler, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($handler, CURLOPT_FOLLOWLOCATION, true);

        if (in_array($method, ['POST', 'PUT', 'DELETE'])) {
            $requestBody = json_encode($params);

            if ($method === 'POST') {
                curl_setopt($handler, CURLOPT_POST, true);
            } else {
                curl_setopt($handler, CURLOPT_CUSTOMREQUEST, $method);
            }

            curl_setopt($handler, CURLOPT_POSTFIELDS, $requestBody);

            $headers[] = 'Content-Length: ' . strlen($requestBody);
        }

        curl_setopt($handler, CURLOPT_HTTPHEADER, $headers);

        $response = curl_exec($handler);

        curl_close($handler);

        $json = json_decode($response);

        if (is_object($json) || is_array($json)) {
            return $json;
        }

        error_log($response);

        return null;
    }

    public function delete($path, array $params = [])
    {
        return $this->call('DELETE', $path, $params);
    }

    public function get($path, array $params = [])
    {
        return $this->call('GET', $path, $params);
    }

    public function post($path, array $params = [])
    {
        return $this->call('POST', $path, $params);
    }

    public function put($path, array $params = [])
    {
        return $this->call('PUT', $path, $params);
    }
}