Description:
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I've installed the pecl_http 2.1.4, and most recent versions of the dependencies: raphf, and propro extensions.  Ensured appropriate load order in .ini files, and ran script.  The script returns no result.  Instead I receive fatal errors saying that the HttpMessage object does not exist.

The AWS Linux instance is relatively new (almost 1 month old).

Test script:
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<?php

$http="GET / HTTP/1.1\r\nHost: www.example.com\r\nConnection: close\r\n\r\n";

$msg = new HttpMessage($http);

var_dump($msg);

Expected result:
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return instantiated object

Actual result:
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PHP Fatal error:  Class 'HttpMessage' not found in /var/www/http.php on line 5