C:/xampp/htdocs/moodle/lib/zend/Zend/Validate/InArray.php

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<?php
require_once 'Zend/Validate/Abstract.php';

class Zend_Validate_InArray extends Zend_Validate_Abstract
{
    const NOT_IN_ARRAY = 'notInArray';

    protected $_messageTemplates = array(
        self::NOT_IN_ARRAY => "'%value%' was not found in the haystack",
    );

    protected $_haystack;

    protected $_strict = false;

    protected $_recursive = false;

    public function __construct($options)
    {
        if ($options instanceof Zend_Config) {
            $options = $options->toArray();
        } else if (!is_array($options)) {
            require_once 'Zend/Validate/Exception.php';
            throw new Zend_Validate_Exception('Array expected as parameter');
        } else {
            $count = func_num_args();
            $temp  = array();
            if ($count > 1) {
                $temp['haystack'] = func_get_arg(0);
                $temp['strict']   = func_get_arg(1);
                $options = $temp;
            } else {
                $temp = func_get_arg(0);
                if (!array_key_exists('haystack', $options)) {
                    $options = array();
                    $options['haystack'] = $temp;
                } else {
                    $options = $temp;
                }
            }
        }

        $this->setHaystack($options['haystack']);
        if (array_key_exists('strict', $options)) {
            $this->setStrict($options['strict']);
        }

        if (array_key_exists('recursive', $options)) {
            $this->setRecursive($options['recursive']);
        }
    }

    public function getHaystack()
    {
        return $this->_haystack;
    }

    public function setHaystack(array $haystack)
    {
        $this->_haystack = $haystack;
        return $this;
    }

    public function getStrict()
    {
        return $this->_strict;
    }

    public function setStrict($strict)
    {
        $this->_strict = (boolean) $strict;
        return $this;
    }

    public function getRecursive()
    {
        return $this->_recursive;
    }

    public function setRecursive($recursive)
    {
        $this->_recursive = (boolean) $recursive;
        return $this;
    }

    public function isValid($value)
    {
        $this->_setValue($value);
        if ($this->getRecursive()) {
            $iterator = new RecursiveIteratorIterator(new RecursiveArrayIterator($this->_haystack));
            foreach($iterator as $element) {
                if ($this->_strict) {
                    if ($element === $value) {
                        return true;
                    }
                } else if ($element == $value) {
                    return true;
                }
            }
        } else {
            if (in_array($value, $this->_haystack, $this->_strict)) {
                return true;
            }
        }

        $this->_error(self::NOT_IN_ARRAY);
        return false;
    }
}