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array Set::diff ($val1, $val2 = null)

Computes the difference between a Set and an array, two Sets, or two arrays

$a = array(
	0 => array('name' => 'main'),
	1 => array('name' => 'about')
);
$b = array(
	0 => array('name' => 'main'),
	1 => array('name' => 'about'),
	2 => array('name' => 'contact')
);

$result = Set::diff($a, $b);
/* $result now looks like: 
	Array
	(
	    [2] => Array
	        (
	            [name] => contact
	        )
	)
*/
$result = Set::diff($a, array());
/* $result now looks like: 
	Array
	(
	    [0] => Array
	        (
	            [name] => main
	        )
	    [1] => Array
	        (
	            [name] => about
	        )
	)
*/
$result = Set::diff(array(), $b);
/* $result now looks like: 
	Array
	(
	    [0] => Array
	        (
	            [name] => main
	        )
	    [1] => Array
	        (
	            [name] => about
	        )
	    [2] => Array
	        (
	            [name] => contact
	        )
	)
*/

$b = array(
	0 => array('name' => 'me'),
	1 => array('name' => 'about')
);

$result = Set::diff($a, $b);
/* $result now looks like: 
	Array
	(
	    [0] => Array
	        (
	            [name] => main
	        )
	)
*/

1. $a = array(
2. 0 => array('name' => 'main'),
3. 1 => array('name' => 'about')
4. );
5. $b = array(
6. 0 => array('name' => 'main'),
7. 1 => array('name' => 'about'),
8. 2 => array('name' => 'contact')
9. );
10. $result = Set::diff($a, $b);
11. /* $result now looks like:
12. Array
13. (
14. [2] => Array
15. (
16. [name] => contact
17. )
18. )
19. */
20. $result = Set::diff($a, array());
21. /* $result now looks like:
22. Array
23. (
24. [0] => Array
25. (
26. [name] => main
27. )
28. [1] => Array
29. (
30. [name] => about
31. )
32. )
33. */
34. $result = Set::diff(array(), $b);
35. /* $result now looks like:
36. Array
37. (
38. [0] => Array
39. (
40. [name] => main
41. )
42. [1] => Array
43. (
44. [name] => about
45. )
46. [2] => Array
47. (
48. [name] => contact
49. )
50. )
51. */
52. $b = array(
53. 0 => array('name' => 'me'),
54. 1 => array('name' => 'about')
55. );
56. $result = Set::diff($a, $b);
57. /* $result now looks like:
58. Array
59. (
60. [0] => Array
61. (
62. [name] => main
63. )
64. )
65. */