PHP Slack通知系統：如何實現即時通知與提醒功能

composer require guzzlehttp/guzzle

<?php
session_start();

$clientId = "YOUR_CLIENT_ID";
$clientSecret = "YOUR_CLIENT_SECRET";
$redirectUri = "YOUR_REDIRECT_URI";

if (!isset($_GET['code'])) {
    // 重定向到Slack认证页面
    $authUrl = "https://slack.com/oauth/authorize?client_id={$clientId}&redirect_uri={$redirectUri}&scope=channels:read";
    header("Location: {$authUrl}");
    die();
} else {
    // 获取从Slack返回的code
    $code = $_GET['code'];

    // 使用code获取access_token
    $tokenUrl = "https://slack.com/api/oauth.access?client_id={$clientId}&client_secret={$clientSecret}&code={$code}";
    $response = file_get_contents($tokenUrl);
    $data = json_decode($response);

    // 将access_token存储起来以备后续使用
    $_SESSION['token'] = $data->access_token;

    // 认证成功，重定向到应用页面
    header("Location: /app");
    die();
}
?>

<?php
session_start();

$token = $_SESSION['token'];
$channel = "YOUR_CHANNEL";
$message = "Hello, Slack!";

// 使用Guzzle发送POST请求到Slack API
$client = new GuzzleHttpClient();
$response = $client->post("https://slack.com/api/chat.postMessage", [
    "headers" => [
        "Authorization" => "Bearer {$token}",
        "Content-Type" => "application/json"
    ],
    "json" => [
        "channel" => $channel,
        "text" => $message
    ]
]);

// 处理响应
$result = json_decode($response->getBody());

if ($result->ok) {
    echo "消息已发送！";
} else {
    echo "发送消息失败：" . $result->error;
}
?>