在自定义WP_Query上设置字符限制

I'm searching for a solution for this for 2 days already, but none of the answers helped me out until now.

I have a WP_Query for a custom Wordpress loop and I want to show only posts with 100 characters or less (not words) in the the_content.

<?php $movies = new WP_Query(
    array(
        'showposts' => 4,
    )
);
 if($movies->have_posts()) : while($movies->have_posts()) : $movies->the_post(); ?>

       <h2><?php the_title(); ?></h2>
       <div id="content"><?php the_content(); ?></div>

 <?php endwhile; endif; ?>

Is there any core solution that I can use as an array or I need to figure out another way to do this?

How can I get those results?

Thank you guys, you're amazing.

Try this

<?php $movies = new WP_Query(
    array(
        'showposts' => 4,
    )
);
 if($movies->have_posts()) : while($movies->have_posts()) : $movies->the_post(); ?>

       <?php if(strlen(get_the_content()) <= 100): ?>

       <h2><?php the_title(); ?></h2>
       <div id="content"><?php the_content(); ?></div>
    <?php endif; ?>

 <?php endwhile; endif; ?>