header_remove
(PHP 5 >= 5.3.0)
header_remove — Remove 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. 以上例程的输出类似于： Example #2 Unsetting all previously set headers. 以上例程的输出类似于：
<?php
header("X-Foo: Bar");
header("X-Bar: Baz");
header_remove("X-Foo");
?>
X-Bar: Baz
<?php
header("X-Foo: Bar");
header("X-Bar: Baz");
header_remove();
?>
注释
CautionThis function will remove all headers set by PHP, including cookies, session and the X-Powered-By headers.
Note:
Headers will only be accessible and output when a SAPI that supports them is in use.
参见
- header() - Send a raw HTTP header
- headers_sent() - Checks if or where headers have been sent
