header_remove — Remove previously set headers

2018-01-19 14:50:17
linefo
467
最后编辑:linefo 于 2018-01-19 14:53:24

header_remove

(PHP 5 >= 5.3.0, PHP 7)

header_removeRemove previously set headers

说明

void header_remove ([ string $name ] )

Removes an HTTP header previously set using header().

参数

name

The header name to be removed.

Note: This parameter is case-insensitive.

返回值

没有返回值。

范例

Example #1 Unsetting specific header.

<?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

Example #2 Unsetting all previously set headers.

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

以上例程的输出类似于:

注释

Caution

This function will remove all headers set by PHP, including cookies, session and the X-Powered-By headers.

Note:

数据头只会在SAPI支持时得到处理和输出。

参见