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Correct way to use the array_walk() function

Title: The Fellowship of the Ring

Author: J.R.R. Tolkien

Published: 1954

Pages: 423 (first edition)

Original Language: English

Title: War and Peace

Original Title: Война и миръ

Author: Leo Tolstoy

Published: 1867

Pages: 1,225 (first edition)

Language: Russian, with portions of French and German

CODE FOLLOWS


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

    $bookDetails = array(
            array(
                    'Title' => "The Fellowship of the Ring",
                    'Full Title' => "",
                    'Original Title' => "",
                    'Author' => "J.R.R. Tolkien",
                    'Published' => "1954",
                    'Pages' => "423 (first edition)",
                    'Original Language' => "English"
            ),
            array(
                    'Title' => "War and Peace",
                    'Full Title' => "",
                    'Original Title' => "Война и миръ",
                    'Author' => "Leo Tolstoy",
                    'Published' => "1867",
                    'Pages' => "1,225 (first edition)",
                    'Language' => 'Russian, with portions of French and German'
            )
    );

echo("<h1>Correct way to use the array_walk() function</h1>");

    array_walk($bookDetails[0], "myfunction");  //note no echo()

    array_walk($bookDetails[1], "myfunction");  //note no echo()

    function myfunction($value, $key)
        {
        // If the value is empty, then don't display anything
        if ($value == null)
            {
            echo "";
            }
        else
            {
            echo "<p><strong>$key:</strong> $value<br></p>";
            }
        }

    include('../includes/footer4.php');
?>

Last modified: February 23 2022

Line Count: 46

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