insert feature image on post html code example
Example 1: 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 } ?>
Example 2: add featured image
function fn_add_featured(){
add_theme_support( 'post-thumbnails' );
add_image_size( 'post-imge', 730, 380 );
}
add_action('after_setup_theme','fn_add_featured');