我试图通过创建一个“wp\u ecoles\u details”表将数据插入wordpress数据库。我已经创建了表，但是当我尝试从窗体插入数据时，它不会插入数据。我已经检查了数据库连接是否正常，但是插入没有发生。有人能帮我吗？这是我的code:-

<?php
/**
 * Template Name: cours_page
 *
 * Creates a page with posts, akin to the default index.php. Using this template you can create as many pages of posts as you want.
 *
 * @package thim
 */
get_header();

if ( is_user_logged_in() ) {

    global $wpdb;
    global $current_user;   

    $user = wp_get_current_user();
    //echo ($user);
    $post_id = $wpdb->get_results("SELECT DISTINCT user_id FROM $wpdb->pmpro_membership_orders");

    if ( isset( $_POST['submit'] ) ){

    $type = $_POST["type"];
    $nom_ecole = $_POST["nom_ecole"];
    $adresse = $_POST["adresse"];     
    $postale = $_POST["postale"];
    $ville = $_POST["ville"];
    $telephone = $_POST["telephone"];
    $classes = $_POST["classes"];
    $total_eleve = $_POST["total_eleve"];
    $n_scolaire = $_POST["n_scolaire"];

        global $wpdb;
        $wpdb->insert('wp_ecoles_details', array(
                'type' =>   $type ,
                'nom_ecole' => $nom_ecole,
                'adresse' => $adresse,     
                'postale' => $postale,
                'ville' => $ville,
                'telephone' => $telephone,
                'classes' => $classes,
                'total_eleve' => $total_eleve,
                'n_scolaire' => $n_scolaire
            ),
            array( '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s' ));

    }

?>  
        <div class="ecole_div" id="ecole_div">
            <form  method="post">
              <fieldset>
                <legend>Information sur l’école:</legend>

                 <input type="radio" name="type" value="privee"> Privée
              <input type="radio" name="type" value="publique"> Publique
                <br> <br>
                Nom de l’école:<br>
                <input type="text" name="nom_ecole" value="">
                <br>
                Adresse:<br>
                <textarea rows="4" cols="50" name="adresse"  value="">
                    </textarea>
                <br> 

                Code postal:<br>
                <input type="number" name="postal" value="">
                <br>
                Ville:<br>
                <input type="text" name="ville" value="">
                <br><br>
                Téléphone école:<br>
                <input type="text" name="telephone" value="">
                <br>
                Nombre de classes:<br>
                <input type="number" name="classes" value="">
                <br><br>
                Nombre total d’élèves:<br>
                <input type="number" name="total_eleve" value="">
                <br>
                Niveau scolaire
                 <input type="checkbox" name="n_scolaire" value="maternelle"> Maternelle
              <input type="checkbox" name="n_scolaire" value="primaire"> Primaire
              <input type="checkbox" name="n_scolaire" value="elementaire"> Elémentaire
              <br><br>
                <input type="submit" value="Submit">
              </fieldset>
            </form>
        </div>