1 files changed, 46 insertions, 0 deletions
diff --git a/ext/standard/tests/array/array_diff_variation6.phpt b/ext/standard/tests/array/array_diff_variation6.phpt
new file mode 100644
index 000000000..8ea84bb9d
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+++ b/ext/standard/tests/array/array_diff_variation6.phpt
@@ -0,0 +1,46 @@
+--TEST--
+Test array_diff() function : usage variations - array containing duplicate keys and values
+--FILE--
+<?php
+/* Prototype  : array array_diff(array $arr1, array $arr2 [, array ...])
+ * Description: Returns the entries of $arr1 that have values which are not 
+ * present in any of the others arguments. 
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Test that array_diff behaves as expected for comparing:
+ * 1. the order of the array
+ * 2. duplicate values
+ * 3. duplicate key names
+ */
+
+echo "*** Testing array_diff() : usage variations ***\n";
+
+$array_index = array('a', 'b', 'c', 0 => 'd', 'b');   //duplicate key (0), duplicate value (b)
+$array_assoc = array ('2' => 'c',   //same key=>value pair, different order
+                      '1' => 'b',
+                      '0' => 'a', 
+                      'b' => '3',   //key and value from array_index swapped 
+                      'c' => 2);    //same as above, using integer
+
+var_dump(array_diff($array_index, $array_assoc));
+var_dump(array_diff($array_assoc, $array_index));
+
+echo "Done";
+?>
+--EXPECTF--
+*** Testing array_diff() : usage variations ***
+array(1) {
+  [0]=>
+  string(1) "d"
+}
+array(3) {
+  [0]=>
+  string(1) "a"
+  ["b"]=>
+  string(1) "3"
+  ["c"]=>
+  int(2)
+}
+Done
+\ No newline at end of file