diff --git a/tests/lang/bug24403.phpt b/tests/lang/bug24403.phpt
new file mode 100644
index 00000000000..728dd1d7347
--- /dev/null
+++ b/tests/lang/bug24403.phpt
@@ -0,0 +1,20 @@
+--TEST--
+Bug #24403 (scope doesn't properly propagate into internal functions)
+--FILE--
+<?
+class a
+{
+	var $a = array();
+
+	function a()
+	{
+		$output = preg_replace(
+				'!\{\s*([a-z0-9_]+)\s*\}!sie',
+				"(in_array('\\1',\$this->a) ? '\'.\$p[\'\\1\'].\'' :
+'\'.\$r[\'\\1\'].\'')",
+				"{a} b {c}");
+	}
+}
+new a();
+?>
+--EXPECT--