Zend FR

<?php

require_once 'Zend/Validate/Abstract.php';
require_once 'Zend/Validate/Exception.php';

class Fxc_Validate_ArraySize
extends Zend_Validate_Abstract
{
    const TOO_SHORT = 'arraySizeTooShort';
    const TOO_LONG  = 'arraySizeTooLong';

    /**
     * Nombre minimal d'éléments
     *
     * @var integer
     */
    protected $_min;

    /**
     * Nombre maximal d'éléments
     *
     * N'est pas pris en compte si null
     *
     * @var integer|null
     */
    protected $_max;

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

    protected $_messageTemplates = array(
        self::TOO_SHORT => "array has less than %min% elements",
        self::TOO_LONG  => "array has more than %max% elements"
    );

    /**
     * Initialise les attributs
     *
     * @param  integer $min
     * @param  integer $max
     */
    public function __construct($min = 0, $max = null)
    {
        $this->setMin($min);
        $this->setMax($max);
    }

    public function getMin()
    {
        return $this->_min;
    }

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

    public function setMin($min)
    {
        if (null !== $this->_max && $min > $this->_max) {
             throw new Zend_Validate_Exception('The minimum must be less than or equal to the maximum length, but ' . $min . ' > ' . $this->_max);
        }
        $this->_min = max(0, (integer) $min);
        return $this;
    }

    public function setMax($max)
    {
        if (null === $max) {
            $this->_max = null;
        } else if ($max < $this->_min) {
            throw new Zend_Validate_Exception('The maximum must be greater than or equal to the minimum length, but ' . $max . ' < ' . $this->_min);
        } else {
            $this->_max = (integer) $max;
        }

        return $this;
    }

    /**
     * Vérifie que le tableau $value a un nombre d'éléments compris entre les bornes min et max
     *
     * @param array $value
     * @return boolean
     */
    public function isValid($value)
    {
        $value = (array)$value;
        $this->_setValue($value);

        $size = count($value);

        if ($size < $this->_min) {
            $this->_error(self::TOO_SHORT);
        }
        if (null !== $this->_max && $this->_max < $size) {
            $this->_error(self::TOO_LONG);
        }
        if (count($this->_messages)) {
            return false;
        } else {
            return true;
        }
    }
}