How to clear http header in php

In PHP, you can clear the http header through the header_remove function. The syntax is "header_remove ([ string $name ] ) : void", which means to delete the HTTP header previously set with header().

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

How to clear the http header in php?

header_remove

(PHP 5 >= 5.3.0, PHP 7)

header_remove — Delete the previously set HTTP header

Description

header_remove ([ string $name ] ) : void

Delete the HTTP header previously set with header().

Parameters

name

The name of the header to be removed.

Note: Parameters are not case sensitive.

Return value

No return value.

Example

Example #1 Cancel the specified header

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

The output of the above routine is similar to:

X-Bar: Baz

Example #2 Cancel all previously specified headers Header

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

Note:

Caution

This function will delete all headers set by PHP, including Cookie, Session and X-Powered-By.

Note:

The data header will only be processed and output when supported by SAPI.

Recommended learning: "PHP Video Tutorial"

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