Added test for bug #21998

diff --git a/ext/standard/tests/array/bug21998.phpt b/ext/standard/tests/array/bug21998.phpt
new file mode 100644 (file)
index 0000000..27587ec
--- /dev/null
+++ b/ext/standard/tests/array/bug21998.phpt
@@ -0,0 +1,24 @@
+--TEST--
+Bug #21998 (array_pop() changes current array key)
+--FILE--
+<?php
+
+$a = array("a", "b", "c");
+
+var_dump(key($a));
+var_dump(array_pop($a));
+var_dump(key($a));      
+var_dump(array_pop($a));
+var_dump(key($a));      
+var_dump(array_pop($a));
+var_dump(key($a));      
+
+?>
+--EXPECT--
+int(0)
+string(1) "c"
+int(0)
+string(1) "b"
+int(0)
+string(1) "a"
+NULL