diff --git a/tests/lang/bug24783.phpt b/tests/lang/bug24783.phpt
new file mode 100644
index 00000000000..4b5fa4f229e
--- /dev/null
+++ b/tests/lang/bug24783.phpt
@@ -0,0 +1,12 @@
+--TEST--
+Bug #24783 ($key not binary safe in "foreach($arr as $key => $val)")
+--FILE--
+<?php
+error_reporting(E_ALL);
+	$arr = array ("foo\0bar" => "foo\0bar");
+	foreach ($arr as $key => $val) {
+		echo strlen($key), ": $key => $val\n";
+	}
+?>
+--EXPECT--
+7: foobar => foobar