PHP 7 Data Structures and Algorithms

Converting pseudocode to actual code

We are now going to convert our pseudocodes to actual PHP 7 codes as shown:

function findABook(Array $bookList, String $bookName) {     $found = FALSE;     foreach($bookList as $index => $book) {         if($book === $bookName) {              $found = $index;              break;         }     }     return $found; } function placeAllBooks(Array $orderedBooks, Array &$bookList) {     foreach ($orderedBooks as $book) {     $bookFound = findABook($bookList, $book);     if($bookFound !== FALSE) {         array_splice($bookList, $bookFound, 1);     }   } } $bookList = ['PHP','MySQL','PGSQL','Oracle','Java']; $orderedBooks = ['MySQL','PGSQL','Java']; placeAllBooks($orderedBooks, $bookList);echo implode(",", $bookList); 

Let us now understand what is happening in the preceding code. ...