Please note that the __toString() method is just an alias, as pointed out above, and that THAT method may return an array instead of a string. So in effect you might call a __toString() and expect a string, but instead receive an array.
(PHP 5 >= 5.1.0, PHP 7, PHP 8)
SplFileObject::__toString — Alias of SplFileObject::fgets()
此方法是该方法的别名： SplFileObject::fgets().
| 版本 | 说明 |
|---|---|
| 7.2.19, 7.3.6 | Changed from an alias of SplFileObject::current() to an alias of SplFileObject::fgets(). |
Please note that the __toString() method is just an alias, as pointed out above, and that THAT method may return an array instead of a string. So in effect you might call a __toString() and expect a string, but instead receive an array.