Get custom post types in WordPress

• 21 Mar 2020
• |
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To get custom post types in wordpress, pass post type data i.e. taxonomy, term id, post type and post_per_page in `WP_Query`, `query_posts` or `get_post` function. I will use `WP_Query` 

Difference between query_posts(), get_posts() and WP_Query

query_posts(): Using query_posts is simple way to get posts, but sometimes it fails some conditions i.e. pagination. It makes the website slow because it executes the sql queries in many times. Not good to use query_posts()

get_posts(): get_posts will used with foreach. it will return an array and will used in anywhere.

WP_Query:  WP_Query is safer, efficient to used and can also work with pagination.

Note: posts_per_page `-1` means all posts

$args = array(
            'posts_per_page' => -1,
            'post_type' => 'POST_TYPE_HERE',
            'tax_query' => array(
                array(
                    'taxonomy' => 'TAXONOMY_HERE',
                    'field' => 'term_id',
                    'terms' => TEMR_ID_HERE,
                )
            )
        );              

        $loop = new WP_Query($args);
        if($loop->have_posts()) {
            while($loop->have_posts()) : $loop->the_post();
            $src = wp_get_attachment_image_src( get_post_thumbnail_id(get_the_id()), 'thumbnail_size' );
            $imageURL = $src[0];
            ?>
            <a href="<?php the_permlink(); ?>" title="<?php the_title(); ?>">
				<img src="<?php echo $url; ?>" alt="<?php the_title(); ?>">
                <h3><?php the_title(); ?></h3>
            </a>
            endwhile;
        }

$args = array(
            'posts_per_page' => -1,
            'post_type' => 'POST_TYPE_HERE',
            'tax_query' => array(
                array(
                    'taxonomy' => 'TAXONOMY_HERE',
                    'field' => 'term_id',
                    'terms' => TEMR_ID_HERE,
                )
            )
        );              

        $loop = new WP_Query($args);
        if($loop->have_posts()) {
            while($loop->have_posts()) : $loop->the_post();
            $src = wp_get_attachment_image_src( get_post_thumbnail_id(get_the_id()), 'thumbnail_size' );
            $imageURL = $src[0];
            ?>
            <a href="<?php the_permlink(); ?>" title="<?php the_title(); ?>">
				<img src="<?php echo $url; ?>" alt="<?php the_title(); ?>">
                <h3><?php the_title(); ?></h3>
            </a>
            endwhile;
        }