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diff --git a/ext/standard/tests/array/array_unique_variation5.phpt b/ext/standard/tests/array/array_unique_variation5.phpt
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index 0000000..5e3f7c3
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+++ b/ext/standard/tests/array/array_unique_variation5.phpt
@@ -0,0 +1,33 @@
+--TEST--
+Test array_unique() function : usage variations - array with duplicate keys
+--FILE--
+<?php
+/* Prototype  : array array_unique(array $input)
+ * Description: Removes duplicate values from array 
+ * Source code: ext/standard/array.c
+*/
+
+/*
+ * Testing the functionality of array_unique() by passing 
+ * array having duplicate keys as values.
+*/
+
+echo "*** Testing array_unique() : array with duplicate keys for \$input argument ***\n";
+
+// initialize the array having duplicate keys
+$input = array( 1 => "one", 2 => "two", 2 => "2", 3 => "three", 1 => "1", "1", "2");
+var_dump( array_unique($input) );
+
+echo "Done";
+?>
+--EXPECTF--
+*** Testing array_unique() : array with duplicate keys for $input argument ***
+array(3) {
+  [1]=>
+  string(1) "1"
+  [2]=>
+  string(1) "2"
+  [3]=>
+  string(5) "three"
+}
+Done