1 files changed, 53 insertions, 0 deletions
diff --git a/ext/standard/tests/array/key_variation3.phpt b/ext/standard/tests/array/key_variation3.phpt
new file mode 100644
index 0000000000..e4880aee56
--- /dev/null
+++ b/ext/standard/tests/array/key_variation3.phpt
@@ -0,0 +1,53 @@
+--TEST--
+Test key() function : usage variations
+--FILE--
+<?php
+/* Prototype  : mixed key(array $array_arg)
+ * Description: Return the key of the element currently pointed to by the internal array pointer 
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Test how the internal pointer is affected when two variables are referenced to each other
+ */
+
+echo "*** Testing key() : usage variations ***\n";
+
+$array1 = array ('zero', 'one', 'two');
+
+echo "\n-- Initial position of internal pointer --\n";
+var_dump(key($array1));
+
+// Test that when two variables are referenced to one another
+// the internal pointer is the same for both
+$array2 = &$array1;
+
+next($array1);
+
+echo "\n-- Position after calling next() --\n";
+echo "\$array1: ";
+var_dump(key($array1));
+echo "\$array2: ";
+var_dump(key($array2));
+?>
+===DONE===
+--EXPECTF--
+*** Testing key() : usage variations ***
+
+-- Initial position of internal pointer --
+int(0)
+
+-- Position after calling next() --
+$array1: int(1)
+$array2: int(1)
+===DONE===
+--UEXPECTF--
+*** Testing key() : usage variations ***
+
+-- Initial position of internal pointer --
+int(0)
+
+-- Position after calling next() --
+$array1: int(1)
+$array2: int(1)
+===DONE===