PHP example to send HTTP Post with cURL, Stream or Guzzle.

ClientPost.php

<?php

namespace Kiwilan\Sentinel;

use Exception;

class ClientPost
{
    protected function __construct(
        readonly protected string $host,
        readonly protected string $method = 'stream', // curl, stream, guzzle
        protected array $payload = [],
        protected int $status = 0,
        protected ?string $message = null,
    ) {
    }

    public static function make(string $host, array $payload = [], string $method = 'stream'): self
    {
        $self = new self(
            host: $host,
            method: $method,
            payload: $payload,
        );

        return $self;
    }

    public function execute(): array
    {
        if ($this->method === 'curl') {
            return $this->curl();
        }

        if ($this->method === 'stream') {
            return $this->stream();
        }

        return $this->guzzle();
    }

    private function guzzle(): array
    {
        $client = new \GuzzleHttp\Client();

        $response = $client->post($this->host, [
            'headers' => [
                'Content-type' => 'application/json',
                'Accept' => 'application/json',
            ],
            'json' => $this->payload,
        ]);

        $this->status = $response->getStatusCode();
        $body = $response->getBody()->getContents();
        $this->message = $body;

        if ($this->status !== 201 && $this->status !== 200 && $this->status !== 0) {
            throw new Exception("Error {$this->status}: {$this->message}");
        }

        return [
            'headers' => $response->getHeaders(),
            'status' => $this->status,
            'body' => $body,
            'json' => json_decode($body, true),
        ];
    }

    private function stream(): array
    {
        $options = [
            'http' => [
                'header' => "Content-Type: application/json\r\n".
                 "Accept: application/json\r\n",
                'method' => 'POST',
                'content' => json_encode($this->payload),
            ],
        ];

        $context = stream_context_create($options);
        $res = file_get_contents($this->host, false, $context);

        $status = $http_response_header[0];
        $this->status = (int) substr($status, 9, 3);
        $this->message = $res;

        if ($res === false) {
            throw new Exception("Error {$this->status}: {$this->message}");
        }

        return [
            'headers' => [],
            'status' => $this->status,
            'body' => $res,
            'json' => json_decode($res, true),
        ];
    }

    private function curl(): array
    {
        $content = json_encode($this->payload);

        $curl = curl_init($this->host);
        curl_setopt($curl, CURLOPT_HEADER, false);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($curl, CURLOPT_HTTPHEADER, [
            'Content-type: application/json',
            'Accept: application/json',
        ]);
        curl_setopt($curl, CURLOPT_POST, true);
        curl_setopt($curl, CURLOPT_POSTFIELDS, $content);

        $json = curl_exec($curl);

        $this->status = curl_getinfo($curl, CURLINFO_HTTP_CODE);
        $headers = curl_getinfo($curl, CURLINFO_HEADER_OUT);
        $message = json_decode($json, true);
        $this->message = $message['message'] ?? $json;

        if ($this->status !== 201 && $this->status !== 200 && $this->status !== 0) {
            throw new Exception("Error {$this->status}: {$this->message}");
        }

        curl_close($curl);
        $json = json_decode($json, true);

        return [
            'headers' => $headers,
            'status' => $this->status,
            'message' => $this->message,
            'json' => $json,
        ];
    }
}