[Symfony2.8] 驗證傳入參數 not blank
- 驗證傳入參數不等於空字串、空陣列、null、false
- Validates that a value is not blank - meaning not equal to a blank string, a blank array,
nullorfalse -
if (false === $value || (empty($value) && '0' != $value)) { // validation will fail }