View all references function get_post_meta( $post_id, $key = '', $single = false ) Uses: get_metadata() to retrieve the metadata.Be careful not to mix upper and lowercase. However get_post_meta will apparently be case sensitive due to WordPress caching. Please note that if a db collation is case insensitive (has with suffix _ci) then update_post_meta and delete_post_meta and get_posts() will update/delete/query the meta records with keys that are upper or lower case.The value of the meta field if $single is true.įalse for an invalid $post_id (non-numeric, zero, or negative value).Īn empty string if a valid but non-existing post ID is passed. Mixed An array of values if $single is false. This parameter has no effect if $key is not specified.
