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diff --git a/ext/standard/tests/array/usort_basic.phpt b/ext/standard/tests/array/usort_basic.phpt
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+++ b/ext/standard/tests/array/usort_basic.phpt
@@ -0,0 +1,119 @@
+--TEST--
+Test usort() function : basic functionality 
+--FILE--
+<?php
+/* Prototype  : bool usort(array $array_arg, string $cmp_function)
+ * Description: Sort an array by values using a user-defined comparison function 
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Test basic functionality of usort() with indexed and associative arrays
+ */
+
+echo "*** Testing usort() : basic functionality ***\n";
+
+function cmp($value1, $value2)
+{
+  if($value1 == $value2) {
+    return 0;
+  }
+  else if($value1 > $value2) {
+    return 1;
+  }
+  else
+    return -1;
+}
+
+// Int array with default keys
+$int_values = array(1, 8, 9, 3, 2, 6, 7);
+
+echo "\n-- Numeric array with default keys --\n";
+var_dump( usort($int_values, 'cmp') );
+var_dump($int_values);
+
+// String array with default keys
+$string_values = array("This", "is", 'a', "test");
+
+echo "\n-- String array with default keys --\n";
+var_dump( usort($string_values, 'cmp') );
+var_dump($string_values);
+
+// Associative array with numeric keys
+$numeric_key_arg = array(1=> 1, 2 => 2, 3 => 7, 5 => 4, 4 => 9);
+
+echo "\n-- Associative array with numeric keys --\n";
+var_dump( usort($numeric_key_arg, 'cmp') );
+var_dump($numeric_key_arg);
+
+// Associative array with string keys
+$string_key_arg = array('one' => 4, 'two' => 2, 'three' => 1, 'four' => 10);
+
+echo "\n-- Associative array with string keys --\n";
+var_dump( usort($string_key_arg, 'cmp') );
+var_dump($string_key_arg);
+?>
+===DONE===
+--EXPECTF--
+*** Testing usort() : basic functionality ***
+
+-- Numeric array with default keys --
+bool(true)
+array(7) {
+  [0]=>
+  int(1)
+  [1]=>
+  int(2)
+  [2]=>
+  int(3)
+  [3]=>
+  int(6)
+  [4]=>
+  int(7)
+  [5]=>
+  int(8)
+  [6]=>
+  int(9)
+}
+
+-- String array with default keys --
+bool(true)
+array(4) {
+  [0]=>
+  string(4) "This"
+  [1]=>
+  string(1) "a"
+  [2]=>
+  string(2) "is"
+  [3]=>
+  string(4) "test"
+}
+
+-- Associative array with numeric keys --
+bool(true)
+array(5) {
+  [0]=>
+  int(1)
+  [1]=>
+  int(2)
+  [2]=>
+  int(4)
+  [3]=>
+  int(7)
+  [4]=>
+  int(9)
+}
+
+-- Associative array with string keys --
+bool(true)
+array(4) {
+  [0]=>
+  int(1)
+  [1]=>
+  int(2)
+  [2]=>
+  int(4)
+  [3]=>
+  int(10)
+}
+===DONE===