PHP stream_context_create有哪些不常见的用法

1. 使用 stream_context_create 创建自定义的 HTTP 请求头：

$options = array(
    'http' => array(
        'header' => "Content-Type: application/json\r\n" .
                    "Authorization: Bearer your_access_token\r\n"
    )
);
$context = stream_context_create($options);

2. 使用 stream_context_create 设置代理服务器：

$options = array(
    'http' => array(
        'proxy' => 'tcp://proxy.example.com:8080',
        'request_fulluri' => true
    )
);
$context = stream_context_create($options);

3. 使用 stream_context_create 设置超时时间：

$options = array(
    'http' => array(
        'timeout' => 10  // 设置超时时间为10秒
    )
);
$context = stream_context_create($options);

4. 使用 stream_context_create 设置 SSL 验证证书：

$options = array(
    'ssl' => array(
        'verify_peer' => true,
        'cafile' => '/path/to/ca_cert.pem'
    )
);
$context = stream_context_create($options);

5. 使用 stream_context_create 在请求中发送文件：

$file_path = '/path/to/file.txt';
$file_contents = file_get_contents($file_path);

$options = array(
    'http' => array(
        'method' => 'POST',
        'header' => "Content-Type: application/octet-stream\r\n",
        'content' => $file_contents
    )
);
$context = stream_context_create($options);