bitwise_arguments.php

<?php

// Keep bumping up in powers of two
define('LANG_LIST_VISIBLE', 1);
define('LANG_LIST_HIDDEN',  2);
define('LANG_LIST_BOTH',    4);


print "\nBoth\n";
print_r(getSupportLanguages(LANG_LIST_BOTH));

print "\nVisible\n";
print_r(getSupportLanguages(LANG_LIST_VISIBLE));

print "\nHidden\n";
print_r(getSupportLanguages(LANG_LIST_HIDDEN));

function getSupportLanguages($params) {
	$result = array();

	$visible = array(
		'en', 'ru',
		);
	$hidden = array(
		'sk', 'nb',
		);

	if ($params & (LANG_LIST_VISIBLE | LANG_LIST_BOTH)) {
		$result = array_merge($result, $visible);
	}
	if ($params & (LANG_LIST_HIDDEN | LANG_LIST_BOTH)) {
		$result = array_merge($result, $hidden);
	}

	return $result;
}
?>

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