1 files changed, 95 insertions, 0 deletions
diff --git a/ext/standard/tests/array/array_diff_variation7.phpt b/ext/standard/tests/array/array_diff_variation7.phpt
new file mode 100644
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+++ b/ext/standard/tests/array/array_diff_variation7.phpt
@@ -0,0 +1,95 @@
+--TEST--
+Test array_diff() function : usage variations - arrays containing referenced variables
+--FILE--
+<?php
+/* Prototype  : array array_diff(array $arr1, array $arr2 [, array ...])
+ * Description: Returns the entries of $arr1 that have values which are not 
+ * present in any of the others arguments. 
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Test how array_diff compares arrays that
+ * 1. Contain referenced variables
+ * 2. Have been referenced to each other
+ */
+
+echo "*** Testing array_diff() : usage variations ***\n";
+$a = 'a';
+
+$arr1 = array ("&$a", 'b', 'c');
+$arr2 = array (1, 2, 3);
+echo "-- Basic Comparison --\n";
+var_dump(array_diff($arr1, $arr2));
+var_dump(array_diff($arr2, $arr1));
+
+$a = 1;
+
+echo "-- \$a changed --\n";
+var_dump(array_diff($arr1, $arr2));
+var_dump(array_diff($arr2, $arr1));
+
+
+$arr2 = &$arr1;
+echo "-- Arrays referenced to each other --\n";
+var_dump(array_diff($arr1, $arr2));
+var_dump(array_diff($arr2, $arr1));
+
+
+$arr1 = array('x', 'y', 'z');
+echo "-- \$arr1 changed --\n";
+var_dump(array_diff($arr1, $arr2));
+var_dump(array_diff($arr2, $arr1));
+
+
+echo "Done";
+?>
+
+--EXPECTF--
+
+*** Testing array_diff() : usage variations ***
+-- Basic Comparison --
+array(3) {
+  [0]=>
+  string(2) "&a"
+  [1]=>
+  string(1) "b"
+  [2]=>
+  string(1) "c"
+}
+array(3) {
+  [0]=>
+  int(1)
+  [1]=>
+  int(2)
+  [2]=>
+  int(3)
+}
+-- $a changed --
+array(3) {
+  [0]=>
+  string(2) "&a"
+  [1]=>
+  string(1) "b"
+  [2]=>
+  string(1) "c"
+}
+array(3) {
+  [0]=>
+  int(1)
+  [1]=>
+  int(2)
+  [2]=>
+  int(3)
+}
+-- Arrays referenced to each other --
+array(0) {
+}
+array(0) {
+}
+-- $arr1 changed --
+array(0) {
+}
+array(0) {
+}
+Done
+\ No newline at end of file