From 4c3150f9072fe93e24d07f2d56d2c85c472eb68c Mon Sep 17 00:00:00 2001
From: NickSdot <catch.github.com.nicksdot@nicksdot.dev>
Date: Wed, 12 Aug 2026 00:21:31 +0700
Subject: [PATCH] docs: added exception class assertion reminder

---
 CODING_STANDARDS.md | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/CODING_STANDARDS.md b/CODING_STANDARDS.md
index 3a53d0e258ca..f2c559a389ff 100644
--- a/CODING_STANDARDS.md
+++ b/CODING_STANDARDS.md
@@ -295,6 +295,21 @@ rewritten to comply with these rules.
 1. Extensions should be well tested using `*.phpt` tests. Read more at
     [qa.php.net](https://qa.php.net/write-test.php) documentation.
 
+2. When testing exceptions, assert the error class in the catch block.
+
+```diff
+  try {
+      throw new ValueError('foo');
+  } catch (ValueError $e) {
+-     echo $e->getMessage(), "\n";
++     echo $e::class, ': ', $e->getMessage(), "\n";
+  }
+
+  --EXPECT--
+- foo
++ ValueError: foo
+```
+
 ## New and experimental functions
 
 To reduce the problems normally associated with the first public implementation