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// 发送消息

function sendMessage($to, $message) {

$url = "https://api.example.com/messages";

$data = [

'to' => $to,

'message' => $message

];

$options = [

'http' => [

'method' => 'POST',

'header' => 'Content-Type: application/json',

'content' => json_encode($data)

]

];

$context = stream_context_create($options);

return file_get_contents($url, false, $context);

}

// 接收消息

function receiveMessage() {

$url = "https://api.example.com/messages";

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$options = [

'http' => [

'method' => 'GET',

'header' => 'Authorization: Bearer YOUR_ACCESS_TOKEN'

]

];

$context = stream_context_create($options);

return file_get_contents($url, false, $context);

}

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