StringLength.php
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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Validate
* @copyright Copyright (c) 2005-2007 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: StringLength.php 4135 2007-03-20 12:46:11Z darby $
*/
/**
* @see Zend_Validate_Interface
*/
require_once 'Zend/Validate/Interface.php';
/**
* @category Zend
* @package Zend_Validate
* @copyright Copyright (c) 2005-2007 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Validate_StringLength implements Zend_Validate_Interface
{
/**
* Minimum length
*
* @var integer
*/
protected $_min;
/**
* Maximum length
*
* If null, there is no maximum length
*
* @var integer|null
*/
protected $_max;
/**
* Array of validation failure messages
*
* @var array
*/
protected $_messages = array();
/**
* Sets validator options
*
* @param integer $min
* @param integer $max
* @return void
*/
public function __construct($min = 0, $max = null)
{
$this->setMin($min);
$this->setMax($max);
}
/**
* Returns the min option
*
* @return integer
*/
public function getMin()
{
return $this->_min;
}
/**
* Sets the min option
*
* @param integer $min
* @return Zend_Validate_StringLength Provides a fluent interface
*/
public function setMin($min)
{
$this->_min = max(0, (integer) $min);
return $this;
}
/**
* Returns the max option
*
* @return integer|null
*/
public function getMax()
{
return $this->_max;
}
/**
* Sets the max option
*
* @param integer|null $max
* @return Zend_Validate_StringLength Provides a fluent interface
*/
public function setMax($max)
{
if (null === $max) {
$this->_max = null;
} else {
$this->_max = (integer) $max;
}
return $this;
}
/**
* Defined by Zend_Validate_Interface
*
* Returns true if and only if the string length of $value is at least the min option and
* no greater than the max option (when the max option is not null).
*
* @param string $value
* @return boolean
*/
public function isValid($value)
{
$this->_messages = array();
$valueString = (string) $value;
$length = strlen($valueString);
if ($length < $this->_min) {
$this->_messages[] = "'$valueString' is less than $this->_min characters long";
}
if (null !== $this->_max && $this->_max < $length) {
$this->_messages[] = "'$valueString' is greater than $this->_max characters long";
}
if (count($this->_messages)) {
return false;
} else {
return true;
}
}
/**
* Defined by Zend_Validate_Interface
*
* Returns array of validation failure messages
*
* @return array
*/
public function getMessages()
{
return $this->_messages;
}
}