Returns a list of installed languages, indexed by the specified key.
$field: (optional) The field to index the list with.
An associative array, keyed on the values of $field.
function language_list($field = 'language') {
$languages =& drupal_static(__FUNCTION__);
// Init language list
if (!isset($languages)) {
if (drupal_multilingual() || module_exists('locale')) {
$languages['language'] = db_query('SELECT * FROM {languages} ORDER BY weight ASC, name ASC')
->fetchAllAssoc('language');
// Users cannot uninstall the native English language. However, we allow
// it to be hidden from the installed languages. Therefore, at least one
// other language must be enabled then.
if (!$languages['language']['en']->enabled && !variable_get('language_native_enabled', TRUE)) {
unset($languages['language']['en']);
}
}
else {
// No locale module, so use the default language only.
$default = language_default();
$languages['language'][$default->language] = $default;
}
}
// Return the array indexed by the right field
if (!isset($languages[$field])) {
$languages[$field] = array();
foreach ($languages['language'] as $lang) {
// Some values should be collected into an array
if (in_array($field, array(
'enabled',
'weight',
))) {
$languages[$field][$lang->{$field}][$lang->language] = $lang;
}
else {
$languages[$field][$lang->{$field}] = $lang;
}
}
}
return $languages[$field];
}