PHP Not Recognizing http_get_request_headers()?

Question

I'm calling http_get_request_headers() in a PHP file on a server running PHP 5. However, I'm getting Fatal error: Call to undefined function http_get_request_headers(). Does anyone know what the problem might be? Does this function not come with plain PHP?

Answer 1

No it does not. You need a PECL module for that function to work. But you can use the contents of the $_SERVER variable as stated in this comment on the php site. Alternatively you can use the apache function if this is your web server.

Answer 2

If you're using version >= 2 of pecl_http you'll need to use the namespace syntax for calling the functions. Check out the version 2 documentation here and example here

Basically \http\Env::getRequestHeader()

Answer 3

That function is part of the PECL extension.

Follow the instructions on this page to install it: http://ar.php.net/manual/en/http.install.php