PHP stream_context_create有哪些不常见的用法

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);

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);

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);

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);

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);