| 1: | <?php |
| 2: | |
| 3: | /** |
| 4: | * This is in almost every respect equivalent to an array except |
| 5: | * that it keeps track of which keys were accessed. |
| 6: | * |
| 7: | * @warning For the sake of backwards compatibility with early versions |
| 8: | * of PHP 5, you must not use the $hash[$key] syntax; if you do |
| 9: | * our version of offsetGet is never called. |
| 10: | */ |
| 11: | class HTMLPurifier_StringHash extends ArrayObject |
| 12: | { |
| 13: | /** |
| 14: | * @type array |
| 15: | */ |
| 16: | protected $accessed = array(); |
| 17: | |
| 18: | /** |
| 19: | * Retrieves a value, and logs the access. |
| 20: | * @param mixed $index |
| 21: | * @return mixed |
| 22: | */ |
| 23: | #[\ReturnTypeWillChange] |
| 24: | public function offsetGet($index) |
| 25: | { |
| 26: | $this->accessed[$index] = true; |
| 27: | return parent::offsetGet($index); |
| 28: | } |
| 29: | |
| 30: | /** |
| 31: | * Returns a lookup array of all array indexes that have been accessed. |
| 32: | * @return array in form array($index => true). |
| 33: | */ |
| 34: | public function getAccessed() |
| 35: | { |
| 36: | return $this->accessed; |
| 37: | } |
| 38: | |
| 39: | /** |
| 40: | * Resets the access array. |
| 41: | */ |
| 42: | public function resetAccessed() |
| 43: | { |
| 44: | $this->accessed = array(); |
| 45: | } |
| 46: | } |
| 47: | |
| 48: | // vim: et sw=4 sts=4 |
| 49: |