From 74fad61607479189e9287273f96bbf348751159a Mon Sep 17 00:00:00 2001
From: ndossche <7771979+ndossche@users.noreply.github.com>
Date: Sat, 21 Mar 2026 22:58:48 +0100
Subject: [PATCH] Add test for array_diff() array maximum

Forgot to commit this in 614b22ab.
---
 .../tests/array/array_diff_max_elements.phpt     | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 ext/standard/tests/array/array_diff_max_elements.phpt

diff --git a/ext/standard/tests/array/array_diff_max_elements.phpt b/ext/standard/tests/array/array_diff_max_elements.phpt
new file mode 100644
index 00000000000..4c65cd049b3
--- /dev/null
+++ b/ext/standard/tests/array/array_diff_max_elements.phpt
@@ -0,0 +1,16 @@
+--TEST--
+array_diff(): Max elements
+--FILE--
+<?php
+
+$power = 20; // Chosen to be well within a memory_limit
+$arr = range(0, 2**$power);
+try {
+    array_diff(...array_fill(0, 2**(32-$power), $arr));
+} catch (Error $e) {
+    echo $e->getMessage(), "\n";
+}
+
+?>
+--EXPECTF--
+The total number of elements must be lower than %d