catch.deprecatedTrait

Code example

<?php declare(strict_types = 1);

/** @deprecated Use NewException instead */
trait OldTrait
{
}

try {
	throw new \Exception();
} catch (OldTrait $e) {
}

Why is it reported?

This error is reported by the phpstan-deprecation-rules extension.

The catch block references a trait that has been marked as @deprecated. Deprecated traits are planned for removal in a future version. Since traits cannot be thrown or caught in PHP, this code is already incorrect, and the deprecated trait reference compounds the problem.

How to fix it

Catch a proper exception class instead of a deprecated trait:

 try {
 	throw new \Exception();
-} catch (OldTrait $e) {
+} catch (\Exception $e) {
 }