get_field(‘chon’) is not going to work here.
if(get_field('chon') == 'a') {
$title = $_POST['fields']['field_5558a08e10eed'];
$content = $_POST['fields']['field_555ddb4112814'];
}
else if (get_field('chon') == 'b') {
$title = $_POST['fields']['field_555efea0f3e01'];
$content = $_POST['fields']['field_555efed7f3e02'];
}
Your function is called before the field is saved, so it will have no value.
Your accessing the value for the title and content the correct way, you” need to access the value of ‘chon’ the same way.
