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Arrays Revisited (array_multisort using associate arrays)

Populate four arrays with book data

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

Array 1 data

Array
(
    [title] => Wrath
    [author] => John Steinbeck
    [published] => 1939
)

Array 2 data

Array
(
    [title] => Trial
    [author] => Frances Kafka
    [published] => 1925
)

Array 3 data

Array
(
    [title] => Hobit
    [author] => J. R. Tolkien
    [published] => 1937
)

Sort arrays by first array ======================

Array1 data

Array
(
    [published] => 1939
    [author] => John Steinbeck
    [title] => Wrath
)

Array2 data

Array
(
    [published] => 1925
    [author] => Frances Kafka
    [title] => Trial
)

Array3 data

Array
(
    [published] => 1937
    [author] => J. R. Tolkien
    [title] => Hobit
)

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

Array 1 data

Array
(
    [0] => Wrath
    [1] => John Steinbeck
    [2] => 1939
)

Array 2 data

Array
(
    [0] => Trial
    [1] => Frances Kafka
    [2] => 1925
)

Array 3 data

Array
(
    [0] => Hobit
    [1] => J. R. Tolkien
    [2] => 1937
)

Sort arrays by first array ======================

Array1 data

Array
(
    [0] => 1939
    [1] => John Steinbeck
    [2] => Wrath
)

Array2 data

Array
(
    [0] => 1925
    [1] => Frances Kafka
    [2] => Trial
)

Array3 data

Array
(
    [0] => 1937
    [1] => J. R. Tolkien
    [2] => Hobit
)

CODE FOLLOWS


<?php
    include('../includes/header4.php');

    // code
    error_reporting(E_ALL);    // set error reporting to all

    echo('<h3>Arrays Revisited (array_multisort using associate arrays)</h3>');

    echo('<p>Populate four 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');


    $myarray1 = array
    (
            'title' => "Wrath",
            'author' => "John Steinbeck",
            'published' => "1939",
    );

    $myarray2 = array
    (
            'title' => "Trial",
            'author' => "Frances Kafka",
            'published' => "1925",
    );

    $myarray3 = array
    (
            'title' => "Hobit",
            'author' => "J. R. Tolkien",
            'published' => "1937",
    );


    echo('<p>Show the original state of the arrays ======================</p>');

    echo('<p>Array 1 data</p>');

    echo('<pre>');
    print_r($myarray1);
    echo('</pre>');

    echo('<p>Array 2 data</p>');

    echo('<pre>');
    print_r($myarray2);
    echo('</pre>');

    echo('<p>Array 3 data</p>');

    echo('<pre>');
    print_r($myarray3);
    echo('</pre>');
    echo('<br>');


    echo('<p>Sort arrays by first array ======================</p>');
    array_multisort($myarray1, $myarray2, $myarray3);


    echo('<p>Array1 data</p>');

    echo('<pre>');
    print_r($myarray1);
    echo('</pre>');

    echo('<p>Array2 data</p>');

    echo('<pre>');
    print_r($myarray2);
    echo('</pre>');

    echo('<p>Array3 data</p>');

    echo('<pre>');
    print_r($myarray3);
    echo('</pre>');
    echo('<br>');

    //===========================

    $myarray1 = array
    (
            "Wrath",
            "John Steinbeck",
            "1939"
    );

    $myarray2 = array
    (
            "Trial",
            "Frances Kafka",
            "1925"
    );

    $myarray3 = array
    (
            "Hobit",
            "J. R. Tolkien",
            "1937"
    );


    echo('<p>Show the original state of the arrays ======================</p>');

    echo('<p>Array 1 data</p>');

    echo('<pre>');
    print_r($myarray1);
    echo('</pre>');

    echo('<p>Array 2 data</p>');

    echo('<pre>');
    print_r($myarray2);
    echo('</pre>');

    echo('<p>Array 3 data</p>');

    echo('<pre>');
    print_r($myarray3);
    echo('</pre>');
    echo('<br>');


    echo('<p>Sort arrays by first array ======================</p>');
    array_multisort($myarray1, $myarray2, $myarray3);


    echo('<p>Array1 data</p>');

    echo('<pre>');
    print_r($myarray1);
    echo('</pre>');

    echo('<p>Array2 data</p>');

    echo('<pre>');
    print_r($myarray2);
    echo('</pre>');

    echo('<p>Array3 data</p>');

    echo('<pre>');
    print_r($myarray3);
    echo('</pre>');
    echo('<br>');
    include('../includes/footer4.php');
?>

Last modified: September 29 2022

Line Count: 155

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