<?php
 
$secret = 'a82278f5ac0374d424aa374a1d7478778f4355d3';
$method = 'POST';
$contentType = 'application/json';
$date = date(DateTimeInterface::RFC2822);
$path = '/v2/origin/custom/748a042a-26fb-4016-9a62-7d12e9170790/connect';
 
$url = "https://a...content-available-to-author-only...m.ru" . $path;
 
$body = [
    'account_id' => '0215634f-60a7-4ec2-ae29-6aaf9774b814',
    'title' => 'First chat channel', //Название вашего канала, отображаемое пользователю
    'hook_api_version' => 'v2',
];
$requestBody = json_encode($body);
$checkSum = md5($requestBody);
 
$str = implode("\n", [
    strtoupper($method),
    $checkSum,
    $contentType,
    $date,
    $path,
]);
 
$signature = hash_hmac('sha1', $str, $secret);
 
$headers = [
    'Date' => $date,
    'Content-Type' => $contentType,
    'Content-MD5' => strtolower($checkSum),
    'X-Signature' => strtolower($signature),
];
 
$curlHeaders = [];
foreach ($headers as $name => $value) {
    $curlHeaders[] = $name . ": " . $value;
}
 
echo $method . ' ' . $url . PHP_EOL;
foreach ($curlHeaders as $header) {
    echo $header . PHP_EOL;
}
echo PHP_EOL . $requestBody . PHP_EOL;
 
$curl = curl_init();
curl_setopt_array($curl, [
    CURLOPT_URL => $url,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_TIMEOUT => 5,
    CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
    CURLOPT_CUSTOMREQUEST => $method,
    CURLOPT_POSTFIELDS => $requestBody,
    CURLOPT_HTTPHEADER => $curlHeaders,
]);
 
$response = curl_exec($curl);
$err = curl_error($curl);
$info = curl_getinfo($curl);
curl_close($curl);
if ($err) {
    $result = "cURL Error #:" . $err;
} else {
    echo "Status: " . $info['http_code'] . PHP_EOL;
    echo $response . PHP_EOL;
}

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