cf7 for shortcode get

$cf7 = get_posts( 'post_type="wpcf7_contact_form"&numberposts=-1' );

$contact_forms = array();
if ( $cf7 ) {
    foreach ( $cf7 as $cform ) {
        $contact_forms[ $cform->post_title ] = $cform->ID;
    }
} else {
    $contact_forms[ __( 'No contact forms found', 'filix-core' ) ] = 0;
}