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Returns a boolean if a post has a Featured Image (formerly known as Post Thumbnail) attached (true) or not (false).
Note: To enable featured images, nee post thumbnails, the current theme must include add_theme_support( 'post-thumbnails' ); in its functions.php file. See also Post Thumbnails.
<?php has_post_thumbnail( $post_id ); ?>
This example first checks if there is a Post Thumbnail (aka Feature Image) set for the current queried item. If there is a Post Thumbnail set, it returns the Post Thumbnail. If not, it echoes out a default image which should be located in the current theme's image folder (assuming the folder is in the theme's root directory).
<?php
// Must be inside a loop.
if ( has_post_thumbnail() ) {
the_post_thumbnail();
}
else {
echo '<img src="' . get_bloginfo( 'stylesheet_directory' ) . '/images/thumbnail-default.jpg" />';
}
?>
Note The above code apparently fails in some instances and the below code is "recommended"
<?php
if ( '' != get_the_post_thumbnail() ) {
// some code
} else {
// some code
}
?>
You can use set_post_thumbnail_size() to set a default size for your thumbnail. Alternatively, you can add new image sizes to the defaults by use add_image_size().
has_post_thumbnail() is located in wp-includes/post-thumbnail-template.php.
Post Thumbnails: has_post_thumbnail(), the_post_thumbnail(), get_post_thumbnail_id(), get_the_post_thumbnail(), add_image_size(), set_post_thumbnail_size()
