PHP - Manual: header_remove

2024-12-22

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header_remove

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

header_remove — 删除之前设置的 HTTP 头

说明

header_remove(string $name = ?): void

删除之前用 header() 设置的 HTTP 头。

参数

name: 要移除的头名称。

注意: 参数不分大小写。

返回值

没有返回值。

范例

示例 #1 取消指定的头


<?php
header("X-Foo: Bar");
header("X-Bar: Baz");
header_remove("X-Foo"); 
?>

以上例程的输出类似于：

X-Bar: Baz

示例 #2 取消之前全部指定的头


<?php
header("X-Foo: Bar");
header("X-Bar: Baz");
header_remove(); 
?>

以上例程的输出类似于：

注释

警告

本函数会删除所有 PHP 设置的头，包括 Cookie、Session 和 X-Powered-By。

注意:
数据头只会在SAPI支持时得到处理和输出。

参见

header() - 发送原生 HTTP 头
headers_sent() - 检测 HTTP 头是否已经发送

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User Contributed Notes 4 notes

down

Saeed Khamseh ¶

11 years ago


if you want to remove header information about php version (x-powered-by), you can use:

header_remove('x-powered-by');

alternatively, if you don't have php 5.3 installed, you can do the same thing using "header" command:

header('x-powered-by:');

don't forget the ':' character at the end of the string!

down

jake at qzdesign dot co dot uk ¶

4 years ago


When called from a command-line process, this function does nothing when passed a specific header to remove, but it does nonetheless work properly when called with no arguments to remove all headers.

Thus, when unit-testing or executing in some other test harness, if the code you are testing may call `header_remove()`, with the UOPZ and XDebug extensions loaded, you could use the following in order to more effectively test that the expected headers are set [which you would do by inspecting the array returned by `xdebug_get_headers()` after running the code under test, as `headers_list()` does not work despite the headers actually being stored internally as normal]:

<?php
uopz_set_return(
  'header_remove',
  function($name = null) {
    if ($name !== null) {
      $pattern = '/^' . preg_quote($name, '/') . ':/i';
      $headers = array_filter(
        xdebug_get_headers(),
        function($header) use($pattern) {
          return !preg_match($pattern, $header);
        }
      );
    }
    // This works to remove all headers, just not individual headers.
    header_remove();
    if ($name !== null) {
      foreach ($headers as $header) {
        header($header);
      }
    }
  },
  true
);
?>

down

Anonymous ¶

6 years ago


expose_php is php.ini only!

this won't work:
ini_set('expose_php',0);

works:
header_remove('x-powered-by');

down

-10

J W ¶

7 years ago


You should ini_set("expose_php", 0); or set it in your php.ini to Off, instead of using this to remove X-Powered-By header.

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官方地址：https://www.php.net/manual/en/function.header-remove.php

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PHP官方手册 - 互联网笔记

header_remove

说明

参数

返回值

范例

注释

参见

User Contributed Notes 4 notes