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<?php /** * Simple class for using an array as a stack. * * Copyright 2008-2017 Horde LLC (http://www.horde.org/) * * @category Horde * @package Support * @license http://www.horde.org/licenses/bsd */ class Horde_Support_Stack { /** * @var array */ protected $_stack = array(); public function __construct($stack = array()) { $this->_stack = $stack; } public function push($value) { $this->_stack[] = $value; } public function pop() { return array_pop($this->_stack); } public function peek($offset = 1) { if (isset($this->_stack[count($this->_stack) - $offset])) { return $this->_stack[count($this->_stack) - $offset]; } else { return null; } } }