headers_list

返回已发送(或准备发送)的响应标头的列表 (PHP 5)
array headers_list ( )

说明

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 752. 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(12) "X-Powered-By"
 [1]=>
 string(10) "Set-Cookie"
 [2]=>
 string(13) "X-Sample-Test"
 [3]=>
 string(12) "Content-type"
}

参见 headers_sent()header()setcookie()