1 files changed, 66 insertions, 0 deletions
diff --git a/ext/standard/tests/array/usort_variation9.phpt b/ext/standard/tests/array/usort_variation9.phpt
new file mode 100644
index 000000000..6a067992e
--- /dev/null
+++ b/ext/standard/tests/array/usort_variation9.phpt
@@ -0,0 +1,66 @@
+--TEST--
+Test usort() function : usage variations - referenced variables
+--FILE--
+<?php
+/* Prototype  : bool usort(array $array_arg, string $cmp_function)
+ * Description: Sort an array by values using a user-defined comparison function 
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Pass an array of referenced variables as $array_arg to test behaviour
+ */
+
+echo "*** Testing usort() : usage variation ***\n";
+
+function cmp_function($value1, $value2)
+{
+  if($value1 == $value2) {
+    return 0;
+  }
+  else if($value1 > $value2) {
+    return 1;
+  }
+  else {
+    return -1;
+  }
+}
+
+// different variables which are used as elements of $array_arg
+$value1 = -5; 
+$value2 = 100;
+$value3 = 0;
+$value4 = &$value1;
+
+// array_args an array containing elements with reference variables
+$array_arg = array(
+  0 => 10,
+  1 => &$value4,
+  2 => &$value2,
+  3 => 200,
+  4 => &$value3,
+);
+
+echo "\n-- Sorting \$array_arg containing different references --\n";
+var_dump( usort($array_arg, 'cmp_function') );
+var_dump($array_arg);
+?>
+===DONE===
+--EXPECTF--
+*** Testing usort() : usage variation ***
+
+-- Sorting $array_arg containing different references --
+bool(true)
+array(5) {
+  [0]=>
+  &int(-5)
+  [1]=>
+  &int(0)
+  [2]=>
+  int(10)
+  [3]=>
+  &int(100)
+  [4]=>
+  int(200)
+}
+===DONE===