WordPress开发手册:get_term()

函数原型

get_term( int|WP_Term|object $term, string $taxonomy = ”, string $output = OBJECT, string $filter = ‘raw’ ): WP_Term|array|WP_Error|null

函数描述

是否弃用

未弃用

函数参数

$term
int|WP_Term|object
Required

If integer, term data will be fetched from the database, or from the cache if available.
If stdClass object (as in the results of a database query), will apply filters and return a WP_Term object with the $term data.
If WP_Term, will return $term.

$taxonomy
string
Optional

Taxonomy name that $term is part of.

Default: ''

$output
string
Optional

The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which correspond to a WP_Term object, an associative array, or a numeric array, respectively.

Default: OBJECT

$filter
string
Optional

How to sanitize term fields. Default 'raw'.

Default: 'raw'

函数返回值

函数位置

函数源码

function get_term( $term, $taxonomy = '', $output = OBJECT, $filter = 'raw' ) {
	if ( empty( $term ) ) {
		return new WP_Error( 'invalid_term', __( 'Empty Term.' ) );
	}

	if ( $taxonomy && ! taxonomy_exists( $taxonomy ) ) {
		return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) );
	}

	if ( $term instanceof WP_Term ) {
		$_term = $term;
	} elseif ( is_object( $term ) ) {
		if ( empty( $term->filter ) || 'raw' === $term->filter ) {
			$_term = sanitize_term( $term, $taxonomy, 'raw' );
			$_term = new WP_Term( $_term );
		} else {
			$_term = WP_Term::get_instance( $term->term_id );
		}
	} else {
		$_term = WP_Term::get_instance( $term, $taxonomy );
	}

	if ( is_wp_error( $_term ) ) {
		return $_term;
	} elseif ( ! $_term ) {
		return null;
	}

	// Ensure for filters that this is not empty.
	$taxonomy = $_term->taxonomy;

	/**
	 * Filters a taxonomy term object.
	 *
	 * The {@see 'get_$taxonomy'} hook is also available for targeting a specific
	 * taxonomy.
	 *
	 * @since 2.3.0
	 * @since 4.4.0 `$_term` is now a `WP_Term` object.
	 *
	 * @param WP_Term $_term    Term object.
	 * @param string  $taxonomy The taxonomy slug.
	 */
	$_term = apply_filters( 'get_term', $_term, $taxonomy );

	/**
	 * Filters a taxonomy term object.
	 *
	 * The dynamic portion of the hook name, `$taxonomy`, refers
	 * to the slug of the term's taxonomy.
	 *
	 * Possible hook names include:
	 *
	 *  - `get_category`
	 *  - `get_post_tag`
	 *
	 * @since 2.3.0
	 * @since 4.4.0 `$_term` is now a `WP_Term` object.
	 *
	 * @param WP_Term $_term    Term object.
	 * @param string  $taxonomy The taxonomy slug.
	 */
	$_term = apply_filters( "get_{$taxonomy}", $_term, $taxonomy );

	// Bail if a filter callback has changed the type of the `$_term` object.
	if ( ! ( $_term instanceof WP_Term ) ) {
		return $_term;
	}

	// Sanitize term, according to the specified filter.
	$_term->filter( $filter );

	if ( ARRAY_A === $output ) {
		return $_term->to_array();
	} elseif ( ARRAY_N === $output ) {
		return array_values( $_term->to_array() );
	}

	return $_term;
}

源码链接

WordPress
Github

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