Arrays Revisited (array_multisort)

Populate three arrays with book data

Show the original state of the arrays ======================

Title data

Array
(
    [0] => The Grapes of Wrath
    [1] => The Trial
    [2] => The Hobit
    [3] => Tale of Two Cities
)

Author data

Array
(
    [0] => John Steinbeck
    [1] => Frances Kafka
    [2] => J. R. Tolkien
    [3] => Charles Dickens
)

Published Date data

Array
(
    [0] => 1939
    [1] => 1925
    [2] => 1937
    [3] => 1859
)

Sort arrays by Title ======================

Title data

Array
(
    [0] => Tale of Two Cities
    [1] => The Grapes of Wrath
    [2] => The Hobit
    [3] => The Trial
)

Author data

Array
(
    [0] => Charles Dickens
    [1] => John Steinbeck
    [2] => J. R. Tolkien
    [3] => Frances Kafka
)

Published Date data

Array
(
    [0] => 1859
    [1] => 1939
    [2] => 1937
    [3] => 1925
)

Sort arrays by Author ======================

Title data

Array
(
    [0] => Tale of Two Cities
    [1] => The Trial
    [2] => The Hobit
    [3] => The Grapes of Wrath
)

Author data

Array
(
    [0] => Charles Dickens
    [1] => Frances Kafka
    [2] => J. R. Tolkien
    [3] => John Steinbeck
)

Published Date data

Array
(
    [0] => 1859
    [1] => 1925
    [2] => 1937
    [3] => 1939
)

Sort arrays by Date Published ======================

Title data

Array
(
    [0] => Tale of Two Cities
    [1] => The Trial
    [2] => The Hobit
    [3] => The Grapes of Wrath
)

Author data

Array
(
    [0] => Charles Dickens
    [1] => Frances Kafka
    [2] => J. R. Tolkien
    [3] => John Steinbeck
)

Published Date data

Array
(
    [0] => 1859
    [1] => 1925
    [2] => 1937
    [3] => 1939
)

 
CODE FOLLOWS

<?php            
    include('includes/header.php');

    // code
    error_reporting(E_ALL);    // set error reporting to all
                        
    echo('<h3>Arrays Revisited (array_multisort)</h3>');
    
    echo('<p>Populate three arrays with book data</p>');

// populate arrays

$titles = array('The Grapes of Wrath','The Trial','The Hobit','Tale of Two Cities');
$authors = array('John Steinbeck','Frances Kafka', 'J. R. Tolkien','Charles Dickens');
$published = array('1939','1925','1937','1859');
    

    echo('<p>Show the original state of the arrays ======================</p>');
    
    echo('<p>Title data</p>');
        
    echo('<pre>');
    print_r($titles);
    echo('</pre>');

    echo('<p>Author data</p>');
    
    echo('<pre>');
    print_r($authors);
    echo('</pre>');

    echo('<p>Published Date data</p>');
    
    echo('<pre>');
    print_r($published);
    echo('</pre>');
    echo('<br>');
    
    echo('<p>Sort arrays by Title ======================</p>');    
    array_multisort($titles, $authors, $published);

    echo('<p>Title data</p>');
        
    echo('<pre>');
    print_r($titles);
    echo('</pre>');

    echo('<p>Author data</p>');
    
    echo('<pre>');
    print_r($authors);
    echo('</pre>');

    echo('<p>Published Date data</p>');
    
    echo('<pre>');
    print_r($published);
    echo('</pre>');
    echo('<br>');
    
    echo('<p>Sort arrays by Author ======================</p>');    
    array_multisort($authors, $titles, $published);

    echo('<p>Title data</p>');
        
    echo('<pre>');
    print_r($titles);
    echo('</pre>');

    echo('<p>Author data</p>');
    
    echo('<pre>');
    print_r($authors);
    echo('</pre>');

    echo('<p>Published Date data</p>');
    
    echo('<pre>');
    print_r($published);
    echo('</pre>');
    echo('<br>');
                
    echo('<p>Sort arrays by Date Published ======================</p>');
    array_multisort($published, $titles, $authors);

    echo('<p>Title data</p>');
        
    echo('<pre>');
    print_r($titles);
    echo('</pre>');

    echo('<p>Author data</p>');
    
    echo('<pre>');
    print_r($authors);
    echo('</pre>');

    echo('<p>Published Date data</p>');
    
    echo('<pre>');
    print_r($published);
    echo('</pre>');
    echo('<br>');

    include('includes/footer.php');
?>