Как отправить файл post запросом из php скрипта?

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$file = '/path/to/file.txt';
$url = 'https://example.com/upload-endpoint';

$curl = curl_init($url);
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, [
    'file' => new CURLFile($file)
]);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($curl);
curl_close($curl);

echo $response;

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$file = '/path/to/file.txt';
$url = 'https://example.com/upload-endpoint';

$data = [
    'file' => file_get_contents($file),
    'filename' => basename($file)
];

$options = [
    'http' => [
        'method' => 'POST',
        'header' => "Content-Type: multipart/form-data
",
        'content' => http_build_query($data)
    ]
];

$context = stream_context_create($options);
$response = file_get_contents($url, false, $context);

echo $response;