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need to make php file that is located inside the theme, it must be said lang_ (languages ??which will translate as lang_en.php) and contains the following code:

<?php $FL_DICT = array(

   'cat' => 'Katze',
   'dog' => 'Hund',
.............

);?> where 'cat' => 'Katze' 'regulations is a word and its translation.

in function.php to add the code: <?php if(class_exists('flexoLanguage')){

$f  =   dirname(__FILE__);

if(!flexoLanguage::is_set_language())
    flexoLanguage::set_language('en');//selected language

flexoLanguage::add_dictionary($f);

function _l($key){
    return flexoLanguage::_($key);
}

} else{ function _l($key){return $key;} }?>

and everywhere in the code where you write words you want to have a translation in another language and place: _l('cat');