array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'zh', ), 'this' => array ( 0 => 'function.stream-get-meta-data.php', 1 => 'stream_get_meta_data', 2 => '从流或文件指针中获取 header/meta 数据', ), 'up' => array ( 0 => 'ref.stream.php', 1 => 'Stream 函数', ), 'prev' => array ( 0 => 'function.stream-get-line.php', 1 => 'stream_get_line', ), 'next' => array ( 0 => 'function.stream-get-transports.php', 1 => 'stream_get_transports', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'zh', 'path' => 'reference/stream/functions/stream-get-meta-data.xml', ), 'history' => array ( ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); contributors($setup); ?>

stream_get_meta_data

(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)

stream_get_meta_data — 从流或文件指针中获取 header/meta 数据

说明

stream_get_meta_data(resource $stream): array

返回现有 stream 的有关信息。

参数

stream

流可以是通过 fopen()、fsockopen()、 pfsockopen()、stream_socket_client() 创建的任何流。

返回值

返回的数组包含以下元素：

示例

示例 #1 stream_get_meta_data() 示例，fopen() 和 http 一起使用

<?php
$url = 'http://www.example.com/';

if (!$fp = fopen($url, 'r')) {
trigger_error("Unable to open URL ($url)", E_USER_ERROR);
}

$meta = stream_get_meta_data($fp);

var_dump($meta);

fclose($fp);
?>

以上示例的输出类似于：

array(10) {
  'timed_out' =>
  bool(false)
  'blocked' =>
  bool(true)
  'eof' =>
  bool(false)
  'wrapper_data' =>
  array(13) {
    [0] =>
    string(15) "HTTP/1.1 200 OK"
    [1] =>
    string(11) "Age: 244629"
    [2] =>
    string(29) "Cache-Control: max-age=604800"
    [3] =>
    string(38) "Content-Type: text/html; charset=UTF-8"
    [4] =>
    string(35) "Date: Sat, 20 Nov 2021 18:17:57 GMT"
    [5] =>
    string(24) "Etag: "3147526947+ident""
    [6] =>
    string(38) "Expires: Sat, 27 Nov 2021 18:17:57 GMT"
    [7] =>
    string(44) "Last-Modified: Thu, 17 Oct 2019 07:18:26 GMT"
    [8] =>
    string(22) "Server: ECS (chb/0286)"
    [9] =>
    string(21) "Vary: Accept-Encoding"
    [10] =>
    string(12) "X-Cache: HIT"
    [11] =>
    string(20) "Content-Length: 1256"
    [12] =>
    string(17) "Connection: close"
  }
  'wrapper_type' =>
  string(4) "http"
  'stream_type' =>
  string(14) "tcp_socket/ssl"
  'mode' =>
  string(1) "r"
  'unread_bytes' =>
  int(1256)
  'seekable' =>
  bool(false)
  'uri' =>
  string(23) "http://www.example.com/"
}

示例 #2 stream_get_meta_data() 示例，stream_socket_client() 和 https 一起使用

<?php
$streamContext = stream_context_create(
[
'ssl' => [
'capture_peer_cert' => true,
'capture_peer_cert_chain' => true,
'disable_compression' => true,
],
]
);

$client = stream_socket_client(
'ssl://www.example.com:443',
$errorNumber,
$errorDescription,
40,
STREAM_CLIENT_CONNECT,
$streamContext
);


$meta = stream_get_meta_data($client);

var_dump($meta);
?>

以上示例的输出类似于：

array(8) {
  'crypto' =>
  array(4) {
    'protocol' =>
    string(7) "TLSv1.3"
    'cipher_name' =>
    string(22) "TLS_AES_256_GCM_SHA384"
    'cipher_bits' =>
    int(256)
    'cipher_version' =>
    string(7) "TLSv1.3"
  }
  'timed_out' =>
  bool(false)
  'blocked' =>
  bool(true)
  'eof' =>
  bool(false)
  'stream_type' =>
  string(14) "tcp_socket/ssl"
  'mode' =>
  string(2) "r+"
  'unread_bytes' =>
  int(0)
  'seekable' =>
  bool(false)
}

注释

注意:

本函数对通过 Socket 扩展创建的套接字无效。

参见