getservbyportheader_register_callback
(No version information available, might only be in SVN)
header_register_callback — Call a header function
설명
Registers a function that will be called when PHP starts sending output.
The callback is executed just after PHP prepares all headers to be sent, and before any other output is sent, creating a window to manipulate the outgoing headers before being sent.
인수
- callback
-
Function called just before the headers are sent. It gets no parameters and the return value is ignored.
반환값
성공할 경우 TRUE를, 실패할 경우 FALSE를 반환합니다.
예제
Example #1 header_register_callback() example
<?php
header('Content-Type: text/plain');
header('X-Test: foo');
function foo() {
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('foo');
echo "a";
?>
위 예제의 출력 예시:
Content-Type: text/plain a
주의
header_register_callback() is executed just as the headers are about to be sent out, so any output from this function can break output.
Note:
Headers will only be accessible and output when a SAPI that supports them is in use.
참고
- headers_list() - Returns a list of response headers sent (or ready to send)
- header_remove() - Remove previously set headers
- header() - Send a raw HTTP header
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User Contributed Notes
header_register_callback