Enhance the SSG mode

[J-env]

If I don't want to use Node.js for rendering, but instead use the static pages generated by SSG and render them through PHP, how can I fill in certain variables?
Can the compiler provide configuration options to customize the SSG output?

function SSGTest() {
   return (
     <div>
         <Show 
           when={__SSG_DATA__.uid > 0} 
           fallback={<button onClick={() => {}}>{__SSG_DATA__.i18n('Sign up')}</button>}
         >
           <span>{__SSG_DATA__.uid}</span>
         </Show>
     </div>
   )
}

// ssg-test.php.html

<div>
   <?php if ($uid > 0): ?>
      <span><?= $uid ?></span>
   <?php else: ?>
      <button _hk="0"><?= i18n('Sign up') ?></button>
   <?php endif; ?>
</div>