I've trouble with meta charset encoding. I've got a Zend Application which card inserts the meta charset into phtml file by doing this:

$this->headMeta()->appendHttpEquiv('Content-Type', 'text/html; charset=UTF-8');
$this->headMeta();

In browser, the page has set the united states-ascii charset. I'm not sure why it's happening. Apache and PHP conf files have set charset with UTF-8 encoding.
My local server is placed on Linux Mint (on VirtualBox in Home windows 7). File encoding conversion does not change anything.

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The issue happened due to php5-tidy Apache module.

Take take a look here: How to set charset to UTF-8 in a Zend application? .Make certain your working files are saved with utf-8 encoding.