get post thumbnail image wordpress code example

Example 1: wordpress get post thumbnail url

<?php 
  // ALL parameters are optional. Not needed if you are on WP LOOP
  echo get_the_post_thumbnail_url( $the_query->ID, array( 500, 400) ); ?>

Example 2: show featured image in post wordpress

<?php if(has_post_thumbnail()){
  the_post_thumnbail('cstm_name', array( 'class' => 'class1 class2' ))
} else { ?>
  <img class="card-img-top" src="http://placehold.it/750x300" alt="Card image cap" class="img-responsive">
<?php } ?>