header
Function • Params and return types changed in PHP 8.0
Send a raw HTTP header.
header Function synopsis
header(
string $header,
bool $replace = true,
int $response_code = 0
): voidParameters
$header
Typestring
The header string.
$replace
OptionalTypeboolDefault valuetrue
The optional $replace parameter indicates
whether the header should replace a previous similar header, or
add a second header of the same type. By default it will replace,
but if you pass in false as the second argument you can force
multiple headers of the same type. For example:
$response_code
OptionalTypeintDefault value0
Forces the HTTP response code to the specified value. Note that this
parameter only has an effect if the $header is
not empty.
Return value
The header function is a void function; it does not return any values.
Changes to the header Function
PHP 8.0
- Return type added:
void - Parameter type added for parameter #1 (
$header):string - Parameter type added for parameter #2 (
$replace):bool - Parameter default value added for position #2 (
$replace):true - Parameter name of parameter #3 changed:
$http_response_codeto$response_code - Parameter type added for parameter #3 (
$response_code):int - Parameter default value added for position #3 (
$response_code):0
header(
- $header,
+ string $header,
- $replace,
+ bool $replace = true,
- $http_response_code
+ int $response_code = 0
- )
+ ): voidheader Function Availability
header Function Availability| PHP Version | Availability |
|---|---|
| PHP 8.6Upcoming Release | Yes |
| PHP 8.5Supported (Latest) | Yes |
| PHP 8.4Supported | Yes |
| PHP 8.3Security-Fixes Only | Yes |
| PHP 8.2Security-Fixes Only | Yes |
| PHP 8.1Unsupported | Yes |
| PHP 8.0Unsupported | Yes |
| PHP 7.4Unsupported | Yes |
| PHP 7.3Unsupported | Yes |
| PHP 7.2Unsupported | Yes |
| PHP 7.1Unsupported | Yes |
| PHP 7.0Unsupported | Yes |
| PHP 5.6Unsupported | Yes |
| PHP 5.5Unsupported | Yes |
| PHP 5.4Unsupported | Yes |
| PHP 5.3Unsupported | Yes |