LessThan.php

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

class Zend_Validate_LessThan extends Zend_Validate_Abstract
{
    const NOT_LESS = 'notLessThan';

    protected $_messageTemplates = array(
        self::NOT_LESS => "'%value%' is not less than '%max%'"
    );

    protected $_messageVariables = array(
        'max' => '_max'
    );

    protected $_max;

    public function __construct($max)
    {
        if ($max instanceof Zend_Config) {
            $max = $max->toArray();
        }

        if (is_array($max)) {
            if (array_key_exists('max', $max)) {
                $max = $max['max'];
            } else {
                #require_once 'Zend/Validate/Exception.php';
                throw new Zend_Validate_Exception("Missing option 'max'");
            }
        }

        $this->setMax($max);
    }

    public function getMax()
    {
        return $this->_max;
    }

    public function setMax($max)
    {
        $this->_max = $max;
        return $this;
    }

    public function isValid($value)
    {
        $this->_setValue($value);
        if ($this->_max <= $value) {
            $this->_error(self::NOT_LESS);
            return false;
        }
        return true;
    }

}