src/dynamic/editcompany.php

<?php
require_once(__DIR__."/../core.php");
security::checkType(security::ADMIN, security::METHOD_NOTFOUND);

if (!isset($_GET["id"])) {
  security::notFound();
}

$c = companies::get($_GET["id"]);

if ($c === false) {
  security::notFound();
}
?>

<form action="doeditcompany.php" method="POST" autocomplete="off">
  <h4 class="mdl-dialog__title">Editar empresa</h4>
  <div class="mdl-dialog__content">
    <div class="mdl-textfield mdl-js-textfield mdl-textfield--floating-label">
      <input class="mdl-textfield__input" type="text" name="id" id="edit_id" value="<?=security::htmlsafe($c['id'])?>" readonly="readonly" autocomplete="off">
      <label class="mdl-textfield__label" for="edit_nombre">ID</label>
    </div>
    <br>
    <div class="mdl-textfield mdl-js-textfield mdl-textfield--floating-label">
      <input class="mdl-textfield__input" type="text" name="name" id="edit_name"  value="<?=security::htmlsafe($c['name'])?>" autocomplete="off" data-required>
      <label class="mdl-textfield__label" for="edit_name">Nombre de la empresa</label>
    </div>
    <br>
    <div class="mdl-textfield mdl-js-textfield mdl-textfield--floating-label">
      <input class="mdl-textfield__input" type="text" name="cif" id="edit_cif"  value="<?=security::htmlsafe($c['cif'])?>" autocomplete="off">
      <label class="mdl-textfield__label" for="edit_cif">CIF (opcional)</label>
    </div>
  </div>
  <div class="mdl-dialog__actions">
    <button type="submit" class="mdl-button mdl-js-button mdl-js-ripple-effect mdl-button--accent">Confirmar</button>
    <button data-dyndialog-close class="mdl-button mdl-js-button mdl-js-ripple-effect cancel">Cancelar</button>
  </div>
</form>