headers_list

(PHP 5)

headers_list -- 返回已发送(或准备发送)的响应标头的列表

说明

array headers_list ( void )

headers_list() 将返回一个数字索引的数组,包含有向浏览器/客户端发送的标头。要判断标头是否已被发送,使用 headers_sent()

例子 1. headers_list() 例子

<?php

/* setcookie() will add a response header on its own */
setcookie('foo', 'bar');

/* Define a custom response header
   This will be ignored by most clients */
header("X-Sample-Test: foo");

/* Specify plain text content in our response */
header('Content-type: text/plain');

/* What headers are going to be sent? */
var_dump(headers_list());

?>

上例的输出类似于:

array(4) {
  [0]=>
  string(29) "X-Powered-By: PHP/5.0.0"
  [1]=>
  string(19) "Set-Cookie: foo=bar"
  [2]=>
  string(18) "X-Sample-Test: foo"
  [3]=>
  string(24) "Content-type: text/plain"
}

参见 headers_sent()header()setcookie()