This library allows to build complex conditions connected with AND/OR statements with subconditions support and then check them in some context.
Let's say we want to match books that are hard to read or those ones with titles longer than 50 characters:
$wiseBookCondition = (new ConditionComposite())
->addOR(new Difficulty(Difficulty::HARD))
->addOR(new TitleOfMoreCharsThan(50));Or easy books with short titles for children:
$booksForChildrenCondition = (new ConditionComposite())
->addAND(new Difficulty(Difficulty::EASY))
->addAND((new TitleOfMoreCharsThan(15))->negate());Or those with really long titles:
$titleLogerThan99Condition = new TitleOfMoreCharsThan(99);An easy to read book with a long title:
$easyBookWithLongTitle = (new Book())
->setTitle("A really long title of some book that must be wise.")
->markAsEasy();A hard to read book with short title:
$hardBookWithShortTitle = (new Book())
->markAsHard()
->setTitle("How?");An easy to read book with a short title:
$easyBookWithShortTitle = (new Book())
->markAsEasy()
->setTitle("Cats");Is this book wise?
$wiseBookCondition->isTrueIn($easyBookWithLongTitle); //true
$wiseBookCondition->isTrueIn($hardBookWithShortTitle); //true
$wiseBookCondition->isTrueIn($easyBookWithShortTitle); //falseIs it for children?
$booksForChildrenCondition->isTrueIn($easyBookWithLongTitle); //false
$booksForChildrenCondition->isTrueIn($hardBookWithShortTitle); //false
$booksForChildrenCondition->isTrueIn($easyBookWithShortTitle); //trueIs the title longer than 99 characters?
$titleLogerThan99Condition->isTrueIn($easyBookWithLongTitle); //false
$titleLogerThan99Condition->isTrueIn($hardBookWithShortTitle); //false
$titleLogerThan99Condition->isTrueIn($easyBookWithShortTitle);//falseA title of a wise book may be longer than 99 characters.
/* @var $intersectDetector IntersectDetector */
$intersectDetector->intersectExists(
$wiseBookCondition,
$titleLogerThan99Condition
); //trueBut books for children have no titles that long.
/* @var $intersectDetector IntersectDetector */
$intersectDetector->intersectExists(
$booksForChildrenCondition,
$titleLogerThan99Condition
); //falseTwo condition objects may be equal.
/* @var $comparator EqualityComparator */
$comparator->equal(
$titleLogerThan99Condition,
new TitleOfMoreCharsThan(99)
); //trueUse composer to get the latest version:
$ composer require lukaszmakuch/lmcondition
The above code is taken from an example code located in ./examples. You can check there all files needed to provide this functionality.
For more information check the best documentation - unit tests in ./tests. There's also documentation generated in ./doc.