send.php

<?php

class MarketBot {

    function __construct(array $target, $timeout = 5) {
        $this->target = $target;
        $this->timeout = $timeout;
    }

    function send($message) {
        $payload = [
            'usr' => $this->target['usr'],
            'pw' => $this->target['pw'],
            'botid' => intval($this->target['botid']),
            'messages' => [
                [
                    'program' => $this->target['program'],
                    'chat' => $this->target['chat'],
                    'type' => 'text',
                    '_text' => $message,
                ],
            ],
        ];

        $ch = curl_init('https://marketbot.biz/index.php/'
                . 'botapi/send_message');
        curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payload));
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
        curl_setopt($ch, CURLOPT_TIMEOUT, $this->timeout);
        curl_exec($ch);
        curl_close($ch);
    }

}