Zend_Locale also provides a convenience function to compare two
locales. All locale-aware classes should provide a similar equality check.
Example 533. Check for equal locales
<?php
$locale = new Zend_Locale();
$mylocale = new Zend_Locale('en_US');
// Check if locales are equal
if ($locale->equals($mylocale)) {
print "Locales are equal";
}