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diff --git a/ext/standard/tests/array/array_diff_basic.phpt b/ext/standard/tests/array/array_diff_basic.phpt
new file mode 100644
index 000000000..30aead657
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+++ b/ext/standard/tests/array/array_diff_basic.phpt
@@ -0,0 +1,116 @@
+--TEST--
+Test array_diff() function : basic functionality
+--FILE--
+<?php
+/* Prototype  : array array_diff(array $arr1, array $arr2 [, array ...])
+ * Description: Returns the entries of $arr1 that have values which are not present 
+ * in any of the others arguments. 
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Test basic functionality of array_diff
+ */
+
+echo "*** Testing array_diff() : basic functionality ***\n";
+
+//Test indexed array with integers as elements
+$array_int1 = array (1, 2, 3, 4);
+$array_int2 = array (3, 4, 5, 6);
+
+echo "-- Test indexed array with integers as elements --\n";
+var_dump(array_diff($array_int1, $array_int2));
+var_dump(array_diff($array_int2, $array_int1));
+
+
+//Test indexed array with strings as elements
+$array_string1 = array ('one', 'two', 'three', 'four');
+$array_string2 = array ('three', 'four', 'five', 'six');
+
+echo "-- Test indexed array with strings as elements --\n";
+var_dump(array_diff($array_string1, $array_string2));
+var_dump(array_diff($array_string2, $array_string1));
+
+//Test associative array with strings as keys and integers as elements
+$array_assoc_int1 = array ('one' => 1, 'two' => 2, 'three' => 3, 'four' => 4);
+$array_assoc_int2 = array ('three' => 3, 'four' => 4, 'five' => 5, 'six' => 6);
+
+echo "-- Test associative array with strings as keys and integers as elements --\n";
+var_dump(array_diff($array_assoc_int1, $array_assoc_int2));
+var_dump(array_diff($array_assoc_int2, $array_assoc_int1));
+
+//Test associative array with strings as keys and elements
+$array_assoc_str1 = array ('one' => 'un', 'two' => 'deux', 'three' => 'trois', 'four' => 'quatre');
+$array_assoc_str2 = array ('three' => 'trois', 'four' => 'quatre', 'five' => 'cinq', 'six' => 'six');
+
+echo "-- Test associative array with strings as keys and integers as elements --\n";
+var_dump(array_diff($array_assoc_str1, $array_assoc_str2));
+var_dump(array_diff($array_assoc_str2, $array_assoc_str1));
+
+echo "-- Test array_diff with more than 2 arguments --\n";
+var_dump(array_diff($array_int1, $array_int2, $array_string1, $array_string2));
+
+echo "Done";
+?>
+--EXPECTF--
+*** Testing array_diff() : basic functionality ***
+-- Test indexed array with integers as elements --
+array(2) {
+  [0]=>
+  int(1)
+  [1]=>
+  int(2)
+}
+array(2) {
+  [2]=>
+  int(5)
+  [3]=>
+  int(6)
+}
+-- Test indexed array with strings as elements --
+array(2) {
+  [0]=>
+  string(3) "one"
+  [1]=>
+  string(3) "two"
+}
+array(2) {
+  [2]=>
+  string(4) "five"
+  [3]=>
+  string(3) "six"
+}
+-- Test associative array with strings as keys and integers as elements --
+array(2) {
+  ["one"]=>
+  int(1)
+  ["two"]=>
+  int(2)
+}
+array(2) {
+  ["five"]=>
+  int(5)
+  ["six"]=>
+  int(6)
+}
+-- Test associative array with strings as keys and integers as elements --
+array(2) {
+  ["one"]=>
+  string(2) "un"
+  ["two"]=>
+  string(4) "deux"
+}
+array(2) {
+  ["five"]=>
+  string(4) "cinq"
+  ["six"]=>
+  string(3) "six"
+}
+-- Test array_diff with more than 2 arguments --
+array(2) {
+  [0]=>
+  int(1)
+  [1]=>
+  int(2)
+}
+Done