woothemes/woocommerce — comment on commit 9f698d94d0c408830abca199eaad5565bb07f19f
File:  line 0
By GeertDD:

I've never encountered that, but it might happen on some servers. Anyway, you still can simplify the check using `empty()`.

```php
if (isset($_POST) && $_POST) {}
if ( ! empty($_POST)) {}
```