header_register_callback
Description
Call a header function
Syntax
header_register_callback ( callable $callback ) : bool
Parameters
callbackFunction called just before the headers are sent. It gets no parameters and the return value is ignored.
Return
Returns TRUE on success or FALSE on failure.
Examples
1
<?
header('Content-Type: text/plain');
header('X-Test: test');
function test() {
foreach (headers_list() as $header) {
if (strpos($header, 'X-Powered-By:') !== false) {
header_remove('X-Powered-By');
}
header_remove('X-Test');
}
}
$result = header_register_callback(test());
print_r(headers_list());
echo "a";
?>
