}
writeln("BEGIN TESTING COMPOSITE PATTERN");
writeln('');
$firstBook = new OneBook('Core PHP Programming, Third Edition', 'Atkinson and Suraski');
writeln('(after creating first book) oneBook info: ');
writeln($firstBook->getBookInfo(1));
writeln('');
$secondBook = new OneBook('PHP Bible', 'Converse and Park');
writeln('(after creating second book) oneBook info: ');
writeln($secondBook->getBookInfo(1));
writeln('');
$thirdBook = new OneBook('Design Patterns', 'Gamma, Helm, Johnson, and Vlissides');
writeln('(after creating third book) oneBook info: ');
writeln($thirdBook->getBookInfo(1));
writeln('');
$books = new SeveralBooks();
$booksCount = $books->addBook($firstBook);
writeln('(after adding firstBook to books) SeveralBooks info : ');
writeln($books->getBookInfo($booksCount));
writeln('');
$booksCount = $books->addBook($secondBook);
writeln('(after adding secondBook to books) SeveralBooks info : ');
writeln($books->getBookInfo($booksCount));
writeln('');
$booksCount = $books->addBook($thirdBook);
writeln('(after adding thirdBook to books) SeveralBooks info : ');
writeln($books->getBookInfo($booksCount));
writeln('');
$booksCount = $books->removeBook($firstBook);
writeln('(after removing firstBook from books) SeveralBooks count : ');
writeln($books->getBookCount());
echo tagins("body");
echo "BEGIN TESTING COMPOSITE PATTERN";
echo tagins("br") . tagins("br");
$firstBook = new OneBook("Core PHP Programming, Third Edition", "Atkinson and Suraski");
echo "(after creating first book) oneBook info: " . tagins("br");
echo $firstBook->getBookInfo(1);
echo tagins("br") . tagins("br");
$secondBook = new OneBook("PHP Bible", "Converse and Park");
echo "(after creating second book) oneBook info: " . tagins("br");
echo $secondBook->getBookInfo(1);
echo tagins("br") . tagins("br");
$thirdBook = new OneBook("Design Patterns", "Gamma, Helm, Johnson, and Vlissides");
echo "(after creating third book) oneBook info: " . tagins("br");
echo $thirdBook->getBookInfo(1);
echo tagins("br") . tagins("br");
$books = new SeveralBooks();
$booksCount = $books->addBookk($firstBook);
echo "(after adding firstBook to books) SeveralBooks info : " . tagins("br");
echo $books->getBookInfo($booksCount);
echo tagins("br") . tagins("br");
$booksCount = $books->addBookk($secondBook);
echo "(after adding secondBook to books) SeveralBooks info : " . tagins("br");
echo $books->getBookInfo($booksCount);
echo tagins("br") . tagins("br");
$booksCount = $books->addBookk($thirdBook);
echo "(after adding thirdBook to books) SeveralBooks info : " . tagins("br");
echo $books->getBookInfo($booksCount);
echo tagins("br") . tagins("br");
$booksCount = $books->removeBook($firstBook);
echo "(after removing firstBook from books) SeveralBooks count : ";
echo $books->getBookCount();
