ZF-4163: Zend_Cache_Frontend_Page - page cache is not saved when 'memorize_headers' option is set
When 'memorize_headers' option is set, page content cannot be saved. So second request to cached content always returns empty string.
There is a typo in 'Zend/Cache/Frontend/Page.php' in line 304:
if (strolower($headerName) == strtolower($headerSentName))
First 'strolower' should be changed to 'strtolower'.