#mixed http\Message::getHeader(string $header[, string $into_class = NULL])

Retrieve a single header, optionally hydrated into a http\Header extending class.

Params:#

• string $header#
  The header's name.
• Optional string $into_class# = NULL
  The name of a class extending http\Header.

Returns:#

• mixed, the header value if $into_class is NULL.
• http\Header, descendant.

Warnings:#

• If $into_class is specified but is not a descendant of http\Header.

Example:#

<?php
class hdr extends http\Header {
    function __construct($name, $value) {
        var_dump($name, $value);
        parent::__construct($name, $value);
    }
}

$msg = new http\Message("Foo: bar");
$msg->getHeader("foo", "hdr");
?>

Yields:

string(3) "foo"
string(3) "bar"