1 files changed, 79 insertions, 0 deletions
diff --git a/ext/standard/tests/array/usort_variation10.phpt b/ext/standard/tests/array/usort_variation10.phpt
new file mode 100644
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--- /dev/null
+++ b/ext/standard/tests/array/usort_variation10.phpt
@@ -0,0 +1,79 @@
+--TEST--
+Test usort() function : usage variations - duplicate keys and values
+--FILE--
+<?php
+/* Prototype  : bool usort(array $array_arg, string $cmp_function)
+ * Description: Sort an array by values using a user-defined comparison function 
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Pass an array with duplicate keys and values to usort() to test behaviour
+ */
+
+echo "*** Testing usort() : usage variation ***\n";
+
+function cmp($value1, $value2)
+{
+  if($value1 == $value2) {
+    return 0;
+  }
+  else if($value1 > $value2) {
+    return 1;
+  }
+  else
+    return -1;
+}
+
+// Array with duplicate string and integer keys and values
+$array_arg = array(0 => 2,     "a" => 8, "d" => 9, 
+                   3 => 3,     5 => 2,   "o" => 6, 
+                   "z" => -99, 0 => 1,   "z" => 3);
+
+echo "\n-- Array with duplicate keys --\n";
+var_dump( usort($array_arg, 'cmp') );
+var_dump($array_arg);
+
+// Array with default and assigned keys
+$array_arg = array(0 => "Banana", 1 => "Mango", "Orange", 2 => "Apple", "Pineapple");
+
+echo "\n-- Array with default/assigned keys --\n";
+var_dump( usort($array_arg, 'cmp') );
+var_dump($array_arg);
+?>
+===DONE===
+--EXPECTF--
+*** Testing usort() : usage variation ***
+
+-- Array with duplicate keys --
+bool(true)
+array(7) {
+  [0]=>
+  int(1)
+  [1]=>
+  int(2)
+  [2]=>
+  int(3)
+  [3]=>
+  int(3)
+  [4]=>
+  int(6)
+  [5]=>
+  int(8)
+  [6]=>
+  int(9)
+}
+
+-- Array with default/assigned keys --
+bool(true)
+array(4) {
+  [0]=>
+  string(5) "Apple"
+  [1]=>
+  string(6) "Banana"
+  [2]=>
+  string(5) "Mango"
+  [3]=>
+  string(9) "Pineapple"
+}
+===DONE===