wp_get_post_terms( int $post_id, string|string[] $taxonomy = 'post_tag', array $args = array() )

Retrieves the terms for a post.

Contents

Parameters Parameters

$post_id

(int) (Optional) The Post ID. Does not default to the ID of the global $post. Default 0.

$taxonomy

(string|string[]) (Optional) The taxonomy slug or array of slugs for which to retrieve terms.

Default value: 'post_tag'

$args

(array) (Optional) Term query parameters. See WP_Term_Query::__construct() for supported arguments.

  • 'fields'
    (string) Term fields to retrieve. Default 'all'.

Default value: array()

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Return Return

(array|WP_Error) Array of WP_Term objects on success or empty array if no terms were found. WP_Error object if $taxonomy doesn't exist.

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Source Source

File: wp-includes/post.php 

function wp_get_post_terms( $post_id = 0, $taxonomy = 'post_tag', $args = array() ) {
	$post_id = (int) $post_id;

	$defaults = array( 'fields' => 'all' );
	$args     = wp_parse_args( $args, $defaults );

	$tags = wp_get_object_terms( $post_id, $taxonomy, $args );

	return $tags;
}

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Uses Uses

Uses
Uses Description
wp-includes/functions.php: wp_parse_args()

Merges user defined arguments into defaults array.
wp-includes/taxonomy.php: wp_get_object_terms()

Retrieves the terms associated with the given object(s), in the supplied taxonomies.

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Changelog Changelog

Changelog
Version Description
2.8.0 Introduced.

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User Contributed Notes User Contributed Notes

  1. Skip to note 1 content
    You must log in to vote on the helpfulness of this noteVote results for this note: 10You must log in to vote on the helpfulness of this note
    Contributed by Dustin Falgout —

    The difference between this function and get_the_terms() is that this function’s results are not cached (thus, it’ll hit the database every time its called).

  2. Skip to note 2 content
    You must log in to vote on the helpfulness of this noteVote results for this note: 3You must log in to vote on the helpfulness of this note
    Contributed by Codex —

    Examples

    //Returns All Term Items for "my_taxonomy".
$term_list = wp_get_post_terms( $post->ID, 'my_taxonomy', array( 'fields' => 'all' ) );
print_r( $term_list );

// Returns Array of Term Names for "my_taxonomy".
$term_list = wp_get_post_terms( $post->ID, 'my_taxonomy', array( 'fields' => 'names' ) );
print_r( $term_list );

// Returns Array of Term ID's for "my_taxonomy".
$term_list = wp_get_post_terms( $post->ID, 'my_taxonomy', array( 'fields' => 'ids' ) );
print_r( $term_list );
  3. Skip to note 3 content
    You must log in to vote on the helpfulness of this noteVote results for this note: 0You must log in to vote on the helpfulness of this note
    Contributed by tradesouthwest —

    Get term category to only run function if the post (CPT) has that category:

    /**
 * Get category and add text to that page, only.
 * 
 * @param  string $terms Get post terms
 * @return string        Text
 */
function wpdocs_additional_measurements() {
     global $post;

    $innertext = "Hemmed tarps have seatbelt material woven into the hems.";
    $terms = wp_get_post_terms( $post->ID, 'product_cat' );

    foreach ( $terms as $term ) {
        $categories[] = $term->slug;
    }
            
    // Look for term/category by slug	
    if ( in_array( 'custom-tarps', $categories ) ) {
        printf( '<p>%s</p>',
                esc_html__( $innertext, 'woocommerce' )
        );
   }
        
} 
add_action( 'woocommerce_before_add_to_cart_button', 'wpdocs_additional_measurements', 9 );

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    Use curly brackets recommended but not needed on one expression of foreach

  4. Skip to note 4 content
    You must log in to vote on the helpfulness of this noteVote results for this note: 0You must log in to vote on the helpfulness of this note
    Contributed by Mehedi Foysal —

    Get all taxonomy slug of a post

    function post_taxonomy_slug_array( $tax_name = 'category' ) {

    $terms = wp_get_post_terms( get_the_ID(), $tax_name, array( "fields" => "slugs" ) );
    if ( ! empty( $terms ) && ! is_wp_error( $terms ) ) {

        $term_array = array();

        foreach ( $terms as $term ) {
            $term_array[] = $term;
        }

        return $term_array;
    }

    return '';
}

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