WordPress. Una funzione per controllare la pagina madre
Questa funzione è utile per controllare se la pagina corrente ha una certa pagina madre. E’ sufficiente passare alla funzione un parametro, che può essere sia l’abbreviazione della pagina, oppure l’ID numerico.
function is_subpage( $iID = null ){
global $post, $wpdb;
if ( is_page() AND isset( $post->post_parent ) != 0 ){
$aParent = $wpdb->get_row( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE ID = %d AND post_type = 'page' LIMIT 1", $post->post_parent ) );
if ( is_int( $iID ) > 0 )
if ( $aParent->ID == $iID ) return true; else return false;
else
if ( $aParent->ID ) return true; else return false;
} else {
return false;
}
}
/*
Esempio: controlla se la pagina corrente è una
sottopagina di 'prodotti' o della pagina che ha id = 8
*/
if ( is_page('prodotti') OR is_subpage( 8 ) ){
// fai qualcosa
};
Articolo originale: WordPress Check Page Parent custom function
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