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header_remove

(PHP 5 >= 5.3.0)

header_removeRemove previously set headers

Description

void header_remove ([ string $name ] )

Removes an HTTP header previously set using header().

Parameters

name

The header name to be removed.

Note: This parameter is case-insensitive.

Return Values

No value is returned.

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

Caution

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

PHP Manual