fields.php

<?php 

$personnalisations = DynamicInput::getInputsByIdCart($this->order->id_cart);
$dims = array();
foreach($personnalisations as $dynamic_input) {
    $values = array();
    $fields = $dynamic_input->getInputFields(Context::getContext()->language->id);
    foreach ($fields as $input_field) {
        $values[$input_field->name] = $input_field->value;
    }
    $dims[$dynamic_input->id] = $values;
}

var_dump($dims);
die();