#static string http\Env::negotiateContentType(array $supported[, array &$result])

Negotiate the client's preferred MIME content type.

NOTE:
The first element of $supported content types serves as a default if no content-type matches.

Params:#

• array $supported#
  List of supported MIME content types.
• Optional array &$result#
  Out parameter recording negotiation results.

Returns:#

• NULL, if negotiation fails.
• string, the negotiated content type.

Example:#

A client indicates his accepted MIME content types by sending an Accept header. The static http\Env class provides a facility to negotiate the client's preferred content type:

<?php
$_SERVER["HTTP_ACCEPT"] = implode(",", array(
    "text/html",
    "text/plain",
    "text/*;q=0.9",
    "*/*;q=0.1",
    "application/xml;q=0"
));
$supported = array(
    "text/html", 
    "text/plain",
    "application/json", 
    "application/xml"
);
$preferred = http\Env::negotiateContentType($supported, $ranking);
var_dump($preferred, $ranking);
?>

Running this script should give the following output:

string(9) "text/html"
array(3) {
    'text/html' =>
    float(0.99)
    'text/plain' =>
    float(0.98)
    'application/json' =>
    float(0.1)
}