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49 lines
1.9 KiB
PHP
49 lines
1.9 KiB
PHP
<?php
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/*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the MIT license. For more information, see
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* <http://www.doctrine-project.org>.
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*/
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namespace Doctrine\Common;
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/**
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* Comparable interface that allows to compare two value objects to each other for similarity.
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*
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* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
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* @link www.doctrine-project.com
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* @since 2.2
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* @author Benjamin Eberlei <kontakt@beberlei.de>
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* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
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*/
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interface Comparable
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{
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/**
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* Compare the current object to the passed $other.
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*
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* Returns 0 if they are semantically equal, 1 if the other object
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* is less than the current one, or -1 if its more than the current one.
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*
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* This method should not check for identity using ===, only for semantical equality for example
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* when two different DateTime instances point to the exact same Date + TZ.
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*
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* @param mixed $other
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*
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* @return int
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*/
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public function compareTo($other);
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}
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