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1 | <?php\r | |
2 | \r | |
3 | /**\r | |
4 | * This is in almost every respect equivalent to an array except\r | |
5 | * that it keeps track of which keys were accessed.\r | |
6 | *\r | |
7 | * @warning For the sake of backwards compatibility with early versions\r | |
8 | * of PHP 5, you must not use the $hash[$key] syntax; if you do\r | |
9 | * our version of offsetGet is never called.\r | |
10 | */\r | |
11 | class HTMLPurifier_StringHash extends ArrayObject\r | |
12 | {\r | |
13 | /**\r | |
14 | * @type array\r | |
15 | */\r | |
16 | protected $accessed = array();\r | |
17 | \r | |
18 | /**\r | |
19 | * Retrieves a value, and logs the access.\r | |
20 | * @param mixed $index\r | |
21 | * @return mixed\r | |
22 | */\r | |
23 | public function offsetGet($index)\r | |
24 | {\r | |
25 | $this->accessed[$index] = true;\r | |
26 | return parent::offsetGet($index);\r | |
27 | }\r | |
28 | \r | |
29 | /**\r | |
30 | * Returns a lookup array of all array indexes that have been accessed.\r | |
31 | * @return array in form array($index => true).\r | |
32 | */\r | |
33 | public function getAccessed()\r | |
34 | {\r | |
35 | return $this->accessed;\r | |
36 | }\r | |
37 | \r | |
38 | /**\r | |
39 | * Resets the access array.\r | |
40 | */\r | |
41 | public function resetAccessed()\r | |
42 | {\r | |
43 | $this->accessed = array();\r | |
44 | }\r | |
45 | }\r | |
46 | \r | |
47 | // vim: et sw=4 sts=4\r |