<?php 
 // DB Params
    private $host = 'server Adress';
    private $db_name = 'database';
    private $username = 'username';
    private $password = 'password';

<?php 
$book_item = array(
       'id' => $DOC_ID,
       'Cot_notice'=>$COT_NOTICE,
       'title' => $DOC_TITRE_PROPRE,
       'body' => $DOC_TITRE_COMPLEMENT,
       'author' => $DOC_TITRE_PARALLELE,
       'category_id' => $DOC_TITRE_ENSEMBLE,
       'YEAR' => $DOC_ANNEE,
       'ISBN' => $DOC_ISBN,
       'LAN_ID'=>$LAN_ID,
       'PAY_ID'=> $PAY_ID,
   ...