header_remove
(PHP 5 >= 5.3.0, PHP 7, PHP 8)
header_remove — Remove previously set headers
Description
$name = null): voidRemoves an HTTP header previously set using header().
Parameters
-
name -
The header name to be removed. When
null, all previously set headers are removed.Note: This parameter is case-insensitive.
Return Values
No value is returned.
Changelog
| Version | Description |
|---|---|
| 8.0.0 |
name is nullable now.
|
Examples
Example #1 Unsetting specific header.
<?php
header("X-Foo: Bar");
header("X-Bar: Baz");
header_remove("X-Foo");
?>
The above example will output something similar to:
X-Bar: Baz
Example #2 Unsetting all previously set headers.
<?php
header("X-Foo: Bar");
header("X-Bar: Baz");
header_remove();
?>
The above example will output something similar to:
Notes
This 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.
See Also
- header() - Send a raw HTTP header
- headers_sent() - Checks if or where headers have been sent
