default thumbnail for wordpress site - php

Question

I'm trying to modify my custom wp theme and add related post block. I want to add default thumbnail for posts which doesn't have it. Below code is working fine but i can't archive how to add default img.
$args = array( 'numberposts' => '4','post__not_in' => array($post->ID));
$recent_posts = wp_get_recent_posts($args);
foreach( $recent_posts as $recent ) {
if($recent['post_status']=="publish") {
if ( has_post_thumbnail($recent["ID"])) {
echo '<div><a href="' . get_permalink($recent["ID"]) . '" title="Look '.esc_attr($recent["post_title"]).'" >' . get_the_post_thumbnail($recent["ID"], 'thumbnail'). $recent["post_title"].'</a></div> ';
} else {
echo '<div><a href="' . get_permalink($recent["ID"]) . '" title="Look '.esc_attr($recent["post_title"]).'" >' . $recent["post_title"].'</a></div>';
}
}
}

Answer 1

In order to print the default thumbnail if the posts featured image is not found you have to print the default image that you have in your images folder.
<?php if ( has_post_thumbnail() ) {
the_post_thumbnail();
} else { ?>
<img src="<?php bloginfo('template_directory'); ?>/images/default-thumb-img.png"
alt="<?php the_title(); ?>" />
<?php } ?>
What the above code does?
It checks whether the post has thumbnails, if not it assigns the default-thumb-img.png ( Change it to your image name) as per your requirement.

Answer 2

my solution is just hardcode absolute link to default thumbnail
$args = array( 'numberposts' => '4','post__not_in' => array($post->ID));
$recent_posts = wp_get_recent_posts($args);
foreach( $recent_posts as $recent ){
if($recent['post_status']=="publish") {
if ( has_post_thumbnail($recent["ID"])) {
echo '<div class="col-md-3 col-lg-3"><div class="recent-post-holder"><a href="' . get_permalink($recent["ID"]) . '" title="Look '.esc_attr($recent["post_title"]).'" >' . get_the_post_thumbnail($recent["ID"], 'thumbnail'). $recent["post_title"].'</a></div></div> ';
} else {
echo '<div class="col-md-3 col-lg-3"><div class="recent-post-holder"><a href="' . get_permalink($recent["ID"]) . '" title="Look '.esc_attr($recent["post_title"]).'" >' . "<img src='/*add link here*/'>". $recent["post_title"].'</a></div></div>';
}
}
}