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See Release Notes

  • Bug fixes for general core bugs in 4.2.x will end 22 April 2024 (12 months).
  • Bug fixes for security issues in 4.2.x will end 7 October 2024 (18 months).
  • PHP version: minimum PHP 8.0.0 Note: minimum PHP version has increased since Moodle 4.1. PHP 8.1.x is supported too.
<?php

/**
 * This is in almost every respect equivalent to an array except
 * that it keeps track of which keys were accessed.
 *
 * @warning For the sake of backwards compatibility with early versions
 *     of PHP 5, you must not use the $hash[$key] syntax; if you do
 *     our version of offsetGet is never called.
 */
class HTMLPurifier_StringHash extends ArrayObject
{
    /**
     * @type array
     */
    protected $accessed = array();

    /**
     * Retrieves a value, and logs the access.
     * @param mixed $index
     * @return mixed
     */
> #[\ReturnTypeWillChange]
public function offsetGet($index) { $this->accessed[$index] = true; return parent::offsetGet($index); } /** * Returns a lookup array of all array indexes that have been accessed. * @return array in form array($index => true). */ public function getAccessed() { return $this->accessed; } /** * Resets the access array. */ public function resetAccessed() { $this->accessed = array(); } } // vim: et sw=4 sts=4