PHP에서 cURL을 통해 파일을 업로드하는 방법은 무엇입니까?

<?php
// Define the file to be uploaded
$fileKey = 'image';
$tmpFile = $_FILES[$fileKey]['tmp_name'];
$fileName = $_FILES[$fileKey]['name'];

// Initialize cURL
$ch = curl_init();

// Set cURL options
curl_setopt_array($ch, [
    CURLOPT_URL => 'https://your-api-endpoint.com', // Replace with your API endpoint
    CURLOPT_USERPWD => 'username:password', // Replace with your API credentials
    CURLOPT_UPLOAD => true,
    CURLOPT_INFILE => fopen($tmpFile, 'r'), // Open the file for reading
    CURLOPT_INFILESIZE => filesize($tmpFile),
]);

**Sending the Request**

// Execute the cURL request
$response = curl_exec($ch);

if (curl_errno($ch)) {
    echo 'Error sending file: ' . curl_error($ch);
} else {
    // Handle the response
    echo 'File uploaded successfully.';
}

// Close the cURL connection
curl_close($ch);
?>

<?php
// Get the file data
$file = fopen('php://input', 'rb');

// Save the file to a temporary location
$tempFile = tempnam(sys_get_temp_dir(), 'file');
file_put_contents($tempFile, $file);

// Do something with the file
// ...

// Clean up
fclose($file);
unlink($tempFile);
?>