ZF-9845: Zend_Controller_Request_Http::getHeader() is case sensitive for some HTTP headers

Description

Zend_Controller_Request_Http::getHeader() is case sensitive for some HTTP headers although HTTP headers are case insensitive according to RFC 2616. Case sensitive headers include all those that are not in the $_SERVER superglobal variable such as "Content-Type" and "Content-Length".

Comments

A patch to make Zend_Controller_Request_Http::getHeader() case insensitive.