Language problem

You are loading the languages wrong.

PHP Code:

$this->lang->load('connect', $idiom[$langue]);

// should be
// you only load the language you need not an array.
$idiom = 'english';
$this->lang->load('connect', $idiom); 


Thank you for your answer but the array is not the problem.
$langue values 'fr' or 'en' or 'es', so $idiom[$langue] values 'french' or 'english' or 'spanish', witch is correct since the language file is correctly found.