48 lines
1 KiB
PHP
48 lines
1 KiB
PHP
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<?php
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/**
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* This is in almost every respect equivalent to an array except
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* that it keeps track of which keys were accessed.
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*
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* @warning For the sake of backwards compatibility with early versions
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* of PHP 5, you must not use the $hash[$key] syntax; if you do
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* our version of offsetGet is never called.
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*/
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class HTMLPurifier_StringHash extends ArrayObject
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{
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/**
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* @type array
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*/
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protected $accessed = array();
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/**
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* Retrieves a value, and logs the access.
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* @param mixed $index
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* @return mixed
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*/
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public function offsetGet($index)
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{
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$this->accessed[$index] = true;
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return parent::offsetGet($index);
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}
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/**
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* Returns a lookup array of all array indexes that have been accessed.
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* @return array in form array($index => true).
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*/
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public function getAccessed()
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{
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return $this->accessed;
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}
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/**
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* Resets the access array.
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*/
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public function resetAccessed()
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{
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$this->accessed = array();
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}
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}
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// vim: et sw=4 sts=4
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