Valid use cases for at-sign in php

Question

The at sign is used to hide error messages. As far as I see, there is absolutely no use case or excuse for using it.

1. You can hide errors in production by changing

Answer 1

• When using DOMDocument, invalid HTML will throw warnings, we don't care on most cases.
• When using PEAR's Mail, you'll get warnings about functions that shouldn't be called statically, that's because Mail supports PHP 4. These can be safely ignored.
• When using unlink(), you suppress errors to prevent race conditions.