array Set::classicExtract ($data, $path = null)

Gets a value from an array or object that is contained in a given path using an array path syntax, i.e.:

• "{n}.Person.{[a-z]+}" - Where "{n}" represents a numeric key, "Person" represents a string literal
• "{[a-z]+}" (i.e. any string literal enclosed in brackets besides {n} and {s}) is interpreted as a regular expression.

$a = array(
	array('Article' => array('id' => 1, 'title' => 'Article 1')),
	array('Article' => array('id' => 2, 'title' => 'Article 2')),
	array('Article' => array('id' => 3, 'title' => 'Article 3')));
$result = Set::extract($a, '{n}.Article.id');
/* $result now looks like:
	Array
	(
		[0] => 1
		[1] => 2
		[2] => 3
	)
*/
$result = Set::extract($a, '{n}.Article.title');
/* $result now looks like:
	Array
	(
	    [0] => Article 1
	    [1] => Article 2
	    [2] => Article 3
	)
*/
$result = Set::extract($a, '1.Article.title');
// $result == "Article 2"

$result = Set::extract($a, '3.Article.title');
// $result == null

1. $a = array(
2. array('Article' => array('id' => 1, 'title' => 'Article 1')),
3. array('Article' => array('id' => 2, 'title' => 'Article 2')),
4. array('Article' => array('id' => 3, 'title' => 'Article 3')));
5. $result = Set::extract($a, '{n}.Article.id');
6. /* $result now looks like:
7. Array
8. (
9. [0] => 1
10. [1] => 2
11. [2] => 3
12. )
13. */
14. $result = Set::extract($a, '{n}.Article.title');
15. /* $result now looks like:
16. Array
17. (
18. [0] => Article 1
19. [1] => Article 2
20. [2] => Article 3
21. )
22. */
23. $result = Set::extract($a, '1.Article.title');
24. // $result == "Article 2"
25. $result = Set::extract($a, '3.Article.title');
26. // $result == null

$a = array(
	0 => array('pages' => array('name' => 'page')),
	1 => array('fruites'=> array('name' => 'fruit')),
	'test' => array(array('name' => 'jippi')),
	'dot.test' => array(array('name' => 'jippi'))
);

$result = Set::extract($a, '{n}.{s}.name');
/* $result now looks like: 
Array
	(
	    [0] => Array
	        (
	            [0] => page
	        )
	    [1] => Array
	        (
	            [0] => fruit
	        )
	)
*/
$result = Set::extract($a, '{s}.{n}.name');
/* $result now looks like: 
	Array
	(
	    [0] => Array
	        (
	            [0] => jippi
	        )
	    [1] => Array
	        (
	            [0] => jippi
	        )
	)
*/
$result = Set::extract($a,'{\w+}.{\w+}.name');
/* $result now looks like: 
	Array
	(
	    [0] => Array
	        (
	            [pages] => page
	        )
	    [1] => Array
	        (
	            [fruites] => fruit
	        )
	    [test] => Array
	        (
	            [0] => jippi
	        )
	    [dot.test] => Array
	        (
	            [0] => jippi
	        )
	)
*/
$result = Set::extract($a,'{\d+}.{\w+}.name');
/* $result now looks like: 
	Array
	(
	    [0] => Array
	        (
	            [pages] => page
	        )
	    [1] => Array
	        (
	            [fruites] => fruit
	        )
	)
*/
$result = Set::extract($a,'{n}.{\w+}.name');
/* $result now looks like: 
	Array
	(
	    [0] => Array
	        (
	            [pages] => page
	        )
	    [1] => Array
	        (
	            [fruites] => fruit
	        )
	)
*/
$result = Set::extract($a,'{s}.{\d+}.name');
/* $result now looks like: 
	Array
	(
	    [0] => Array
	        (
	            [0] => jippi
	        )
	    [1] => Array
	        (
	            [0] => jippi
	        )
	)
*/
$result = Set::extract($a,'{s}');
/* $result now looks like: 
	Array
	(

	    [0] => Array
	        (
	            [0] => Array
	                (
	                    [name] => jippi
	                )
	        )
	    [1] => Array
	        (
	            [0] => Array
	                (
	                    [name] => jippi
	                )
	        )
	)
*/
$result = Set::extract($a,'{[a-z]}');
/* $result now looks like: 
	Array
	(
	    [test] => Array
	        (
	            [0] => Array
	                (
	                    [name] => jippi
	                )
	        )

	    [dot.test] => Array
	        (
	            [0] => Array
	                (
	                    [name] => jippi
	                )
	        )
	)
*/
$result = Set::extract($a, '{dot\.test}.{n}');
/* $result now looks like: 
	Array
	(
	    [dot.test] => Array
	        (
	            [0] => Array
	                (
	                    [name] => jippi
	                )
	        )
	)
*/

1. $a = array(
2. 0 => array('pages' => array('name' => 'page')),
3. 1 => array('fruites'=> array('name' => 'fruit')),
4. 'test' => array(array('name' => 'jippi')),
5. 'dot.test' => array(array('name' => 'jippi'))
6. );
7. $result = Set::extract($a, '{n}.{s}.name');
8. /* $result now looks like:
9. Array
10. (
11. [0] => Array
12. (
13. [0] => page
14. )
15. [1] => Array
16. (
17. [0] => fruit
18. )
19. )
20. */
21. $result = Set::extract($a, '{s}.{n}.name');
22. /* $result now looks like:
23. Array
24. (
25. [0] => Array
26. (
27. [0] => jippi
28. )
29. [1] => Array
30. (
31. [0] => jippi
32. )
33. )
34. */
35. $result = Set::extract($a,'{\w+}.{\w+}.name');
36. /* $result now looks like:
37. Array
38. (
39. [0] => Array
40. (
41. [pages] => page
42. )
43. [1] => Array
44. (
45. [fruites] => fruit
46. )
47. [test] => Array
48. (
49. [0] => jippi
50. )
51. [dot.test] => Array
52. (
53. [0] => jippi
54. )
55. )
56. */
57. $result = Set::extract($a,'{\d+}.{\w+}.name');
58. /* $result now looks like:
59. Array
60. (
61. [0] => Array
62. (
63. [pages] => page
64. )
65. [1] => Array
66. (
67. [fruites] => fruit
68. )
69. )
70. */
71. $result = Set::extract($a,'{n}.{\w+}.name');
72. /* $result now looks like:
73. Array
74. (
75. [0] => Array
76. (
77. [pages] => page
78. )
79. [1] => Array
80. (
81. [fruites] => fruit
82. )
83. )
84. */
85. $result = Set::extract($a,'{s}.{\d+}.name');
86. /* $result now looks like:
87. Array
88. (
89. [0] => Array
90. (
91. [0] => jippi
92. )
93. [1] => Array
94. (
95. [0] => jippi
96. )
97. )
98. */
99. $result = Set::extract($a,'{s}');
100. /* $result now looks like:
101. Array
102. (
103. [0] => Array
104. (
105. [0] => Array
106. (
107. [name] => jippi
108. )
109. )
110. [1] => Array
111. (
112. [0] => Array
113. (
114. [name] => jippi
115. )
116. )
117. )
118. */
119. $result = Set::extract($a,'{[a-z]}');
120. /* $result now looks like:
121. Array
122. (
123. [test] => Array
124. (
125. [0] => Array
126. (
127. [name] => jippi
128. )
129. )
130. [dot.test] => Array
131. (
132. [0] => Array
133. (
134. [name] => jippi
135. )
136. )
137. )
138. */
139. $result = Set::extract($a, '{dot\.test}.{n}');
140. /* $result now looks like:
141. Array
142. (
143. [dot.test] => Array
144. (
145. [0] => Array
146. (
147. [name] => jippi
148. )
149. )
150. )
151. */