libs/Yii/validators/CCompareValidator.php

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<?php
/**
 * CCompareValidator class file.
 *
 * @author Qiang Xue <qiang.xue@gmail.com>
 * @link http://www.yiiframework.com/
 * @copyright Copyright &copy; 2008-2011 Yii Software LLC
 * @license http://www.yiiframework.com/license/
 */

/**
 * CCompareValidator compares the specified attribute value with another value and validates if they are equal.
 *
 * The value being compared with can be another attribute value
 * (specified via {@link compareAttribute}) or a constant (specified via
 * {@link compareValue}. When both are specified, the latter takes
 * precedence. If neither is specified, the attribute will be compared
 * with another attribute whose name is by appending "_repeat" to the source
 * attribute name.
 *
 * The comparison can be either {@link strict} or not.
 *
 * CCompareValidator supports different comparison operators.
 * Previously, it only compares to see if two values are equal or not.
 *
 * When using the {@link message} property to define a custom error message, the message
 * may contain additional placeholders that will be replaced with the actual content. In addition
 * to the "{attribute}" placeholder, recognized by all validators (see {@link CValidator}),
 * CCompareValidator allows for the following placeholders to be specified:
 * <ul>
 * <li>{compareValue}: replaced with the constant value being compared with {@link compareValue}.</li>
 * </ul>
 *
 * @author Qiang Xue <qiang.xue@gmail.com>
 * @version $Id$
 * @package system.validators
 * @since 1.0
 */
class CCompareValidator extends CValidator
{
	/**
	 * @var string the name of the attribute to be compared with
	 */
	public $compareAttribute;
	/**
	 * @var string the constant value to be compared with
	 */
	public $compareValue;
	/**
	 * @var boolean whether the comparison is strict (both value and type must be the same.)
	 * Defaults to false.
	 */
	public $strict=false;
	/**
	 * @var boolean whether the attribute value can be null or empty. Defaults to false.
	 * If this is true, it means the attribute is considered valid when it is empty.
	 */
	public $allowEmpty=false;
	/**
	 * @var string the operator for comparison. Defaults to '='.