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has_meta()

has_meta( int $post_id ): array[]

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Returns meta data for the given post ID.

Parameters

$post_idintrequired
A post ID.

Return

array[] Array of meta data arrays for the given post ID.
  • ...$0 array
    Associative array of meta data.
    • meta_key string
      Meta key.
    • meta_value mixed
      Meta value.
    • meta_id string
      Meta ID as a numeric string.
    • post_id string
      Post ID as a numeric string.

Source

function has_meta( $post_id ) {
	global $wpdb;

	return $wpdb->get_results(
		$wpdb->prepare(
			"SELECT meta_key, meta_value, meta_id, post_id
			FROM $wpdb->postmeta WHERE post_id = %d
			ORDER BY meta_key,meta_id",
			$post_id
		),
		ARRAY_A
	);
}

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UsesDescription
wpdb::get_results()wp-includes/class-wpdb.php

Retrieves an entire SQL result set from the database (i.e., many rows).

wpdb::prepare()wp-includes/class-wpdb.php

Prepares a SQL query for safe execution.

Used byDescription
post_custom_meta_box()wp-admin/includes/meta-boxes.php

Displays custom fields form fields.

wp_xmlrpc_server::get_custom_fields()wp-includes/class-wp-xmlrpc-server.php

Retrieves custom fields for post.

Changelog

VersionDescription
1.2.0Introduced.

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